Protects against 99.999999% of bacteria (including E.coli, Salmonella), 99.999% of parasites (including Giardia and Cryptosporidium), 99.999% of microplastics, chlorine, organic chemical matter, silt, sand, and cloudiness; improves taste Long-lasting membrane microfilter lasts up to 1,000 gallons (4,000 L) and will stop allowing water to flow through once it’s reached the end of its lifetime Activated carbon filter lasts up to 26 gallons (100 L) of water with proper use and maintenance. We recommend replacing this when you notice a change in smell or taste of your water Compatible with Go series water bottles purchased 2023 or later. Not compatible with earlier models that feature the flip-up mouthpiece and carabiner attachment LifeStraw is proud to be a B Corp and Climate Neutral Certified brand, committed to meeting the highest standards of verified social and environmental performance, transparency and accountability, Weight: 0.18077905484 Pounds, Manufacturer: LifeStraw