How to Clean Lifestraw Water Bottle Filter: Practical Guide for 2026

Filtering water from backcountry streams, secluded lakes, or rustic campground spigots is a fundamental part of outdoor survival and camping comfort. The LifeStraw Go Series Replacement Filter is a dedicated two-stage water purification cartridge built to revive the filtration performance of your existing LifeStraw Go bottle. Whether you are an extended-trip backpacker tackling remote mountain sections, a family camper setting up beside a lake, or an overland traveler exploring off-grid routes, having a fresh filter ensures access to safe drinking water wherever your adventures lead.

Hydration performance is anchored by a dual-stage filtration process that addresses both microbiological safety and water palatability. The primary hollow fiber membrane microfilter stops 99.999999% of bacteria such as E. coli and Salmonella, along with 99.999% of protozoan parasites like Giardia and Cryptosporidium. It also screens out microplastics, fine sand, and trail silt. Behind the membrane, an activated carbon stage targets chlorine, chemical tastes, and musty odors often found in stagnant backcountry pools or treated municipal supplies, resulting in refreshing, crystal-clear water on the trail.

Longevity is one of the strongest attributes of this replacement unit. The hollow fiber membrane is engineered to filter up to 1,000 gallons (4,000 liters) of water under regular trail conditions. An integrated safety feature naturally stops water from flowing through the straw once the pores become fully saturated and reach end of life, preventing any accidental consumption of untreated water. The carbon filter stage is designed to process approximately 26 gallons (100 liters), giving you ample capacity for multiple weekend outings before odor absorption gradually wanes.

Compatibility is a critical consideration for outdoor enthusiasts buying replacements. This filter is manufactured specifically for LifeStraw Go Series bottles purchased in 2023 or later, recognizable by their twist-off protective cap covering the mouthpiece. It works interchangeably across both BPA-free plastic and vacuum-insulated stainless steel bottles in 22-ounce, 24-ounce, and 1-liter capacities. Campers should note that it will not fit legacy Go bottles with the original flip-top valve and carabiner loop design.

Caring for the filter during extended excursions is straightforward, though basic precautions are necessary in variable outdoor climates. Because moisture remains trapped within the hollow fiber membrane after initial use, the filter must never be allowed to freeze. Sub-freezing temperatures can cause residual water to expand and fracture the internal hollow fibers, compromising the biological barrier. Backpackers and cold-weather campers frequently sleep with their wet filter or bottle inside their sleeping bag on frigid nights to protect the membrane integrity.

For solo hikers, weekend warriors, and emergency preparedness planners, keeping a fresh LifeStraw Go Series Replacement Filter ready to deploy offers total hydration peace of mind. It restores your existing bottle to full trail readiness without the expense of purchasing an entirely new hydration setup. The balance of proven pathogen removal, taste enhancement, and robust service life makes this replacement filter an indispensable piece of gear for any reliable camping kit.

Proper maintenance helps maximize the flow rate and lifespan of both filter stages during camping season. After returning from a trek, rinse the outside of the membrane microfilter with clean, safe tap water to wash away surface silt, organic grime, and sediment before putting the bottle into storage.

To avoid mold, mildew, and stale smells during the off-season, air dry the components completely before reassembling. Remove the carbon capsule, let the membrane microfilter dry in a well-ventilated area, and store the unit in a cool, dry place until your next wilderness outing.

When camping in sub-freezing temperatures or through late-fall shoulder seasons, always protect the damp filter from freezing. Keeping the filter inside your jacket or tucked into the foot of your sleeping bag prevents freezing water from expanding and permanently damaging the microfiltration fibers.

This replacement cartridge is tailored exclusively for the updated LifeStraw Go Series lineup introduced in 2023. You can confirm your bottle compatibility by looking at the top lid: compliant bottles feature an integrated screw cap that completely twists over the silicone mouthpiece for sanitary protection.

The cartridge fits seamlessly into the LifeStraw Go Series 22oz and 1-Liter BPA-free plastic bottles, as well as the 24oz and 1-Liter double-wall vacuum-insulated stainless steel versions. Swapping the filter takes just seconds by unscrewing the lid, pulling out the old filter assembly, and sliding the new cartridge firmly into place.

Please note that earlier vintage LifeStraw Go bottles featuring the exposed flip-up bite valve and metal carabiner attachment point use an older filter format and will not fit this newer twist-cap replacement model.

The LifeStraw Go Series 22oz Water Filter Bottle is an integrated personal filtration system built to supply safe drinking water directly from natural outdoor sources and untreated tap supplies. Instead of relying on manual hand pumps, battery-powered purifiers, or chemical chlorine tablets that leave an unpleasant aftertaste, this self-contained unit allows you to dip your bottle into a backcountry river, screw on the lid, and sip immediately. Its compact footprint makes it a natural fit for day hikers, lightweight backpackers, car campers, festival attendees, and emergency preparedness planners who want clean hydration without packing bulky filtration gear.

At the heart of this bottle is a two-stage filter design that handles both biological safety and palatable taste. The hollow fiber membrane microfilter blocks 99.999999% of bacteria such as E. coli and Salmonella, alongside 99.999% of protozoan parasites like Giardia and Cryptosporidium. In addition to halting microplastics, silt, and cloudiness, the integrated activated carbon capsule tackles dissolved organic matter, chlorine, and sour odors. Whether scooping from a questionable campground faucet or filtering water from a remote mountain stream, the system yields crisp, odor-free water that keeps hydration simple during long days outdoors.

Built from rugged BPA-free plastic utilizing 50% post-consumer recycled material, the Go Series bottle handles the typical bumps and drops of active outdoor travel. At 8.7 ounces empty, it adds minimal weight to your hiking loadout and fits cleanly into standard elastic daypack side pockets. The leak-resistant cap includes a sturdy loop that easily accepts a carabiner for securing to a backpacking frame, kayak deck rigging, or car headrest. The hollow fiber membrane is rated to process up to 1,000 gallons (4,000 liters) of water, offering reliable service for multiple seasons of backcountry trips.

Operating the bottle is as simple as filling the reservoir and drinking through the silicone mouthpiece, though campers should expect slightly more suction resistance than drinking from an open canteen. Because the internal filter displaces volume, the liquid capacity sits at roughly 22 ounces, which may require frequent top-offs on dry ridgeline hikes. Keeping the system in prime condition involves occasionally backwashing the membrane if flow rates slow due to silty water, and replacing the carbon filter every 26 gallons to preserve fresh flavor. In sub-freezing temperatures, campers should keep the filter element inside their sleeping bag at night, as frozen residual water can damage the microscopic hollow fibers.

For solo adventurers, weekend hikers, international travelers, and campers preparing emergency storm kits, the LifeStraw Go Series 22oz bottle delivers a balanced blend of reliable microbiological defense and everyday convenience. It removes the guesswork from backwoods water safety without weighing down your pack or requiring complex maintenance in camp. While high-volume family base camps may still benefit from gravity filtration bags for group meals, this bottle remains one of the simplest and most dependable personal hydration tools for quick trail outings and fast-moving outdoor journeys.

Caring for the LifeStraw Go Series bottle ensures steady water flow and long-term durability across many seasons of use. After returning from a trek, disassembling the bottle and rinsing the membrane microfilter with clean tap water helps flush out accumulated silt and fine particles. Leaving the cap off to air-dry completely prevents stagnant odors or mildew from forming in the bottle during home storage.

Replacing wear items is simple and keeps the filtration system performing at its best. While the primary hollow fiber membrane can process up to 1,000 gallons of backcountry water, the activated carbon capsule should be swapped roughly every 26 gallons to continue neutralizing chemical odors and chlorine taste. Campers venturing into near-freezing weather should also remember to pack the wet filter close to their body or inside a sleeping bag, preventing ice crystals from compromising the filtration pores.

The LifeStraw Go Water Bottle 2-Stage Replacement Filter is a practical upgrade for anyone who already owns a LifeStraw Go bottle or is looking to keep their system in top shape. This filter is the heart of the bottle, combining a hollow fiber membrane with an activated carbon capsule to deliver clean, great-tasting water from streams, lakes, or taps. With a 4.6 out of 5-star rating from thousands of users, it's a trusted choice for outdoor hydration.

This replacement filter is best suited for backpackers, hikers, campers, and travelers who want to avoid carrying heavy water bottles. It's also a smart addition for emergency preparedness kits, festival goers, and anyone who spends time in the backcountry. The filter removes 99.9999% of waterborne bacteria and 99.9% of protozoan parasites, which means you can drink with confidence from natural sources that might harbor E. coli, Giardia, or Cryptosporidium.

In real-world camping scenarios, the LifeStraw Go filter shines during long hikes or multi-day trips. Its light weight (just 0.7 ounces) means you won't even notice it in your pack. The flow rate is steady enough for filling your bottle from a stream or a camp sink, and the carbon capsule significantly reduces any chlorine taste or weird odors from treated tap water. According to user feedback, it holds up well even after repeated use, though the flow may slow as the filter gets near its 1,000-liter capacity.

Build quality is solid, with a durable plastic housing that matches the LifeStraw Go bottle's design. The replacement process is simple: just twist off the old filter and twist on the new one. No tools, no mess. The carbon capsule is separate inside the housing and can be swapped out every 100 liters if you want to maintain optimal taste. The filter itself is EPA-tested and meets strict standards for removing common waterborne pathogens.

One limitation to keep in mind is that this filter is only compatible with LifeStraw Go bottles (both 1-stage and 2-stage models). It won't work as a standalone filter or fit other bottles. Additionally, while it's great for bacteria and protozoa, it does not remove viruses, heavy metals, or chemical contaminants. For most U.S. backcountry water sources, that's fine, but if you're traveling to areas with viral risks, you'd need a purifier instead.

Overall, the LifeStraw Go 2-Stage Replacement Filter is an excellent choice for outdoor enthusiasts who already own the bottle or are planning to get one. It's affordable, long-lasting, and backed by a brand committed to safe water access. Whether you're weekend camping, thru-hiking a long trail, or just keeping an emergency kit ready, this filter offers reliable performance without breaking the bank.

The LifeStraw Go Series Insulated Stainless Steel Water Filter Bottle is an all-in-one hydration and purification solution built for campers, backpackers, international travelers, and outdoor weekend warriors. Combining LifeStraw's trusted filtration tech with a vacuum-insulated stainless steel vessel, this 1-liter bottle eliminates the need for bulky pump purifiers or separate cooling containers on day hikes and car camping trips. Whether filling up from a rustic park tap, a clear mountain stream, or an airport sink, this bottle provides immediate access to safe drinking water without requiring chemical tablets or prolonged waiting.

Filtration effectiveness is where this system shines for wilderness enthusiasts and emergency preppers. The two-stage filter features an advanced hollow fiber membrane microfilter paired with an activated carbon capsule. Based on product specifications, the microfilter screens out 99.999999 percent of waterborne bacteria such as E. coli and Salmonella, alongside 99.999 percent of parasites like Giardia and Cryptosporidium, plus dirt and microplastics. The carbon stage actively reduces chlorine, unpleasant odors, and organic matter, making murky campground water taste as fresh as mountain spring runoff.

Durability is top-tier thanks to the food-grade stainless steel body, which handles accidental drops on gravel paths and rocky campsites far better than traditional plastic squeeze flasks. The double-wall vacuum insulation prevents exterior sweat and locks in chilled temperatures for hours, which is a major comfort upgrade when hiking under blazing summer sunshine or overlanding through arid desert trails. A rugged, leak-resistant cap with a protective spout cover prevents grit, sand, and camp debris from contaminating your drinking surface.

Operating and maintaining the bottle around camp is straightforward and hassle-free. You simply unscrew the cap, scoop water directly into the wide-mouth opening, replace the lid, and sip through the mouthpiece. Because filtration happens in real time as you draw water through the straw, there are no hoses to prime or plungers to force down. Cleaning involves hand washing the stainless steel vessel, while the membrane filter can be rinsed clean. The main membrane lasts up to 1,000 gallons, while the carbon capsule is designed for quick, tool-free replacement every 26 gallons.

While excellent for day hikes, campground stays, vehicle overland trips, and disaster preparedness kits, ultralight thru-hikers should weigh its 1.38-pound dry weight against lighter soft-flask squeeze filters. Additionally, the 3.94-inch diameter is too wide for standard car cup holders, meaning it will ride best in backpack side sleeves or gear bins. For car campers, travelers, day hikers, and emergency-minded families who prioritize ice-cold water, rugged durability, and instant point-of-use purification, this insulated filter bottle is a dependable outdoor investment.

Having an on-the-go purification system provides peace of mind when venturing into backcountry campsites, remote state parks, or areas with questionable tap infrastructure. Unlike gravity bags or chemical drops that demand patience before you take a sip, this bottle delivers instantaneous hydration right at the water source.

The microfilter handles suspended sediment, pond protozoa, and stream bacteria with ease, while the carbon block neutralizes stagnant lake tastes. This makes it an essential piece of emergency gear for storm blackouts, off-grid overland journeys, or weekend trips where campground boil-water advisories might catch you by surprise.

Proper maintenance ensures the filter and bottle maintain high flow rates and remain odor-free over multiple camping seasons. Hand wash the stainless steel bottle body and lid using mild soap and warm water, taking care to avoid harsh abrasives on the exterior Polar White coating. Remove the filter assembly before washing the bottle itself, and never put the filtration elements through a household dishwasher.

To maintain optimal water flow from backcountry water sources, regularly backwash or rinse the membrane microfilter with clean water to clear away accumulated silt and organic debris. When packing the bottle away for winter storage, allow all parts to air dry completely to avoid mildew, and store the carbon capsule in a cool, dry place until your next outdoor excursion.

The LifeStraw Go Series 22oz bottle is an integrated filtration water bottle engineered for outdoor adventurers, global travelers, and daily commuters who need safe hydration on the move. Rather than packing separate gravity bags, squeeze tubes, or pump kits, this bottle integrates the filtration hardware directly into the drinking straw. It serves as a practical, grab-and-go solution for hikers, car campers, solo adventurers, festival goers, and budget-conscious backpackers who want to drink safely from backcountry streams, park spigots, rustic campground faucets, or foreign taps without secondary chemical treatments.

Filtration performance relies on a two-stage purification mechanism. The primary stage is a hollow-fiber membrane microfilter engineered to remove 99.999999% of bacteria (such as E. coli and Salmonella), 99.999% of parasites (including Giardia and Cryptosporidium), and 99.999% of microplastics, silt, and cloudiness. The secondary stage features an activated carbon capsule that adsorbs chlorine, organic chemicals, and unpleasant odors. According to user reviews, this pairing dramatically improves municipal water taste while providing critical peace of mind when dipping into a wilderness water source on a multi-hour trail run or long mountain hike.

Build quality centers around a rugged, BPA-free plastic housing made from 50% post-consumer recycled materials. Weighing in at roughly 8.7 ounces (247 grams), it adds minimal base weight to a hiking daypack or travel carry-on. The cylindrical 3.15-inch profile slides effortlessly into standard mesh backpack pockets, bike cages, and car console holders. The membrane filter boasts an impressive capacity of up to 1,000 gallons (4,000 liters), lasting typical outdoor enthusiasts several years of frequent seasonal use, while the carbon block is rated for 26 gallons (100 liters) and can be swapped out quickly once municipal flavor reduction diminishes.

Operating the bottle in outdoor conditions is straightforward, though it does feature a few operational quirks worth noting. Drawing water through the tight microfilter requires more suction than a conventional open straw. Based on product specifications and user feedback, pressure differentials caused by altitude gain, airplane travel, or significant temperature swings can create pressure buildup inside the vessel. Opening the flip-cap under pressure can lead to small spurts of water from the mouthpiece unless the main screw cap is loosened slightly first to equalize the air. Additionally, the filter does not tolerate drink powders or flavor drops, which can clog the porous membrane.

For day hikers, car campers, weekend warriors, and international travelers, the LifeStraw Go Series 22oz bottle provides an exceptionally convenient layer of water security. It eliminates the reliance on single-use bottled water around camp and provides instant access to hydration on remote trails without waiting for chemical purification tablets to activate. While high-volume groups may still prefer a large gravity reservoir for basecamp cooking, this bottle stands out as a practical, self-contained hydration tool for any solo kit or emergency prep go-bag.

The dual filtration system inside the LifeStraw Go Series is designed for immediate point-of-use protection. The hollow fiber membrane uses microscopic 0.2-micron pores to physically block waterborne pathogens, cysts, and suspended solids without relying on batteries, pumps, or waiting intervals. Because the filter works entirely through manual suction, the flow rate depends directly on the user's draw, feeling slightly firmer than a normal sports straw but remaining smooth once the filter fibers become thoroughly saturated.

The secondary activated carbon filter sits above the membrane to target dissolved contaminants that affect smell and flavor. While hollow fibers capture microbial threats, the carbon block traps chlorine, sediment odors, and agricultural runoff compounds. This combination ensures that cloudy backcountry brook water or heavily chlorinated campground tap water comes through crisp and neutral. For best flow rates, backwashing the membrane and clearing trapped air bubbles periodically ensures smooth sipping across extended outdoor excursions.

Proper maintenance ensures the LifeStraw Go Series maintains reliable flow and sanitary performance across multiple seasons. The bottle body and lid are top-rack dishwasher safe once the filter assembly has been completely removed. The hollow-fiber membrane and carbon capsule must be rinsed with clean water only and should never be exposed to harsh soaps, bleaches, or boiling water, which can damage the microscopic filter matrix.

When packing gear away after a weekend camping trip, long-term storage prep is essential. Users should flush the filter with clean tap water, allow all components to air dry thoroughly in a ventilated area, and store the bottle disassembled to prevent mildew formation. If the bottle is stored for an extended period, preparing a mild saline solution according to the manufacturer guidelines helps keep the membrane hydrated and ready for your next outdoor adventure.

The LifeStraw Personal Water Filter is an ultralight, hollow-fiber membrane straw engineered to provide fast access to safe drinking water straight from backcountry sources. Weighing only two ounces and measuring under nine inches long, this compact unit relies on physical microfiltration rather than chemical tablets, UV bulbs, or battery power. By utilizing a 0.2-micron pore size, the internal membrane physically blocks 99.999999 percent of waterborne bacteria such as E. coli and Salmonella, alongside 99.999 percent of common protozoan parasites including Giardia and Cryptosporidium.

This personal filter is best suited for day hikers, ultralight backpackers, trail runners, anglers, survivalists, and emergency preparedness planners. Thanks to its tiny footprint, it serves as an effortless insurance policy inside a daypack, fishing vest, vehicle glove box, or 72-hour disaster kit. Solo adventurers venturing onto remote trails appreciate having a secondary purification method that adds virtually no base weight, while budget-conscious campers and scout leaders find it an accessible tool for outdoor safety.

Out on the trail, hydration performance depends on direct suction from natural water sources like mountain creeks, alpine lakes, or clean springs. Users submerge the bottom end into the water source, allow the membrane to moisten for a few seconds, and sip through the top mouthpiece. Once primed, the flow rate provides adequate volume to quench trail thirst without excessive lung effort. In addition to blocking biological pathogens, the filter traps microplastics and significantly reduces silt and cloudiness, delivering visibly clearer water on remote outings.

Constructed from durable, BPA-free plastic, the LifeStraw features tethered end caps that protect both the inlet and mouthpiece from trail grit when packed. The lack of moving parts, batteries, or fragile electronic components means there is very little that can mechanically malfunction in the field. When stored dry in its packaging, the filter offers a prolonged shelf life, making it a reliable staple for bugout bags. Up to 4,000 liters (1,000 gallons) of water can pass through the membrane before the pores eventually clog and flow naturally stops.

While performance is dependable for direct sipping, there are practical limitations outdoorsmen should consider. The straw design does not collect or store clean water, meaning you cannot easily fill a camp cooking pot, hydrate a freeze-dried meal, or share filtered water across a family campsite. Drinking directly from a shoreline often requires kneeling on wet ground or leaning precariously over muddy stream banks, though scooping water into a wide-mouth bottle first resolves this posture challenge. Additionally, the microfiltration membrane does not eliminate viruses, heavy metals, or chemical tastes, which requires caution around agricultural runoff.

For solo hikers, weekend trail explorers, and household emergency kits, the LifeStraw Personal Water Filter remains one of the most reliable and affordable pieces of survival insurance available. It works best as a primary filter for minimalist fastpackers or as a fail-safe backup alongside larger gravity systems on multi-day backcountry treks. Having one stashed within arm reach ensures dependable hydration whenever unexpected trail delays or municipal water disruptions arise.

Proper maintenance ensures the filter maintains a strong flow rate and reaches its full 4,000-liter lifespan. After each drinking session, simply blow a burst of air back through the mouthpiece to clear trapped sediment, silt, and residual water from the hollow-fiber pores. Keeping the inlet clear prevents premature clogging, particularly when drawing from murky ponds or silty alpine streams.

Before packing the unit away for long-term storage, flush the straw thoroughly with clean tap water, shake out excess moisture, and let it uncapped to air dry completely. Storing the membrane dry prevents mold and mildew growth inside the housing. In cold weather camping, keep the filter inside your jacket pocket or sleeping bag, as freezing temperatures can expand residual water and permanently damage the microfiltration fibers.

Weighing approximately two ounces and measuring under nine inches in length, this filtration straw adds almost no detectable heft to your gear list. It tucks effortlessly into the side pocket of a hiking pack, a trail running vest, a tackle box, or a vehicle console without consuming valuable cargo room.

For ultralight hikers and fastpackers counting every ounce, carrying a dedicated straw minimizes the need to haul heavy water between reliable trail streams. Paired with a lightweight collection cup or bottle, it forms a minimalist hydration setup that keeps you moving fast and light in the backcountry.

The LifeStraw Sip is a personal microfiltration drinking straw engineered with a food-grade stainless steel body, crafted to provide safe, immediate hydration from cups, bottles, or natural backcountry water sources. Functioning as a premium, reusable evolution of traditional plastic emergency straws, it serves hikers, minimalist backpackers, festival goers, car campers, and international travelers who want dependable biological protection without carrying bulky pump equipment.

This compact filter straw is well suited for day hikers venturing along creek trails, solo backpackers packing light, and emergency preparedness planners outfitting bug-out bags. It also appeals directly to festival attendees navigating communal hydration stations and global travelers facing questionable tap water. Weighing around 100 grams, it stores effortlessly inside daypack pockets, camp mess kits, or vehicle consoles for rapid access without unpacking your primary shelter and sleep system.

Based on product specifications, the Sip utilizes an advanced membrane microfilter that removes 99.999999% of waterborne bacteria such as E. coli and Salmonella, alongside 99.999% of protozoan parasites including Giardia and Cryptosporidium. It also screens out microplastics, sediment, and silt down to microscopic levels. The straw purifies up to 1,000 liters across its lifespan without requiring replacement cartridges, batteries, or chemical tablets, operating completely on manual suction as you sip.

Unlike standard plastic filters that can crack under pressure in a tightly packed backpack, the Sip features a rugged stainless steel tube paired with a food-grade silicone mouthpiece for comfortable sipping. It includes a protective leak-proof travel case that keeps dirt, grit, and trail debris away from the drinking tip while on the move. Its slim profile slips easily alongside tent poles, camp cookware, or hydration reservoirs in any outdoor kit.

While this straw handles common backcountry biological hazards with ease, it does have practical limitations. It does not remove dissolved chemicals, heavy metals, or viruses, which are factors to consider in heavily contaminated agricultural runoff or certain developing travel destinations. Users should also expect moderate suction resistance when drawing water through the dense hollow-fiber membrane, and it is not intended for rapidly filling multi-gallon camp gravity bags or cooking pots.

For outdoor enthusiasts, weekend hikers, festival campers, and emergency preppers seeking a tough, reliable personal drinking straw, the LifeStraw Sip provides an excellent combination of durability and water safety. It cuts down on single-use plastic bottles while ensuring that every sip from a mountain brook or campground spigot is clean and dependable.

Maintaining steady water flow through the LifeStraw Sip requires simple periodic cleaning. After drinking from turbid or silt-heavy backcountry streams, gently blow air through the silicone mouthpiece to purge remaining water and dislodge loose sediment from the internal membrane fibers.

The stainless steel exterior and silicone mouthpiece can be hand-washed with warm water and mild soap between camping outings. Avoid exposing the internal filtration element to boiling water, freezing conditions while wet, or automatic dishwashers, as extreme temperatures can damage the microscopic pore structure. Allow the unit to air dry thoroughly before sealing it in the carry case for seasonal storage.

At approximately 100 grams (3.5 ounces), the LifeStraw Sip adds negligible weight to an ultralight trekking pack, trail running vest, or car camping gear tub. Its slim cylindrical form fits naturally into backpack side sleeves, hip belt pockets, or fishing tackle bags.

The included protective hard travel case ensures that the straw stays clean and ready for use even after being jostled against camp stoves, tent stakes, or carabiners. Whether you are staging gear for an overland road trip, an afternoon hike, or emergency home readiness, this compact filter is exceptionally convenient to store and transport.