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 (4,000 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. 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.