Features • Compatible with Go series water bottles purchased 2023 or later. Not compatible with earlier models that feature the flip-up mouthpiece and carabiner attachment • Protects against bacteria(Including E.coli, Salmonella), parasites(Including Giardia and Cryptosporidium), microplastics, chlorine, organic chemical matter, silt, sand and cloudiness, improves taste • Long-lasting membrane microfilter lasts up to 1,000 gallons(4,000L)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(100L)of water with proper use and maintenance • LifeStraw is proud to be a B Corp and Climate Neutral Certified brand • For every purchase, a child in need receives to safe drinking water for a year