LifeStraw Go Series is the ULTIMATE SIDEKICK. The BPA-Free bottle filters out nasties so you can fill up from airport bathrooms, a tap in Mexico, or a gas station while road-tripping IMPROVES TASTE: the Carbon filter reduces chlorine, odors + organic chemical matter FILTERS OUT CONTAMINANTS: the Membrane microfilter protects against 99.999999% Bacteria (including E.coli + Salmonella), 99.999% Parasites (including Giardia and Cryptosporidium), 99.999% Microplastics, sand, dirt, and cloudiness LONG LASTING: The membrane microfilter lasts up to 1,000 gal (4,000 L) - about five years of daily use. Carbon filter lasts up to 26 gallons (100 L) - about two months SAVES WASTE: The membrane microfilter lasts up to 4,000 liters. Thats 8,000 single use plastic water bottles out of our parks, our oceans, and our communities LifeStraw Go Series is the ultimate sidekick for safer, better-tasting water for travel and everyday use. The BPA-free bottle filters out nasties, so you can fill up from airport bathrooms, a tap in Mexico, or a gas station while road-tripping. The advanced 2-stage filter improves taste and protects against bacteria, parasites, microplastics, chlorine, silt, sand, and cloudiness. The BPA-free bottle is made from 50% post -consumer recycled plastic. Do good on the go and avoid single-use plastic bottles. For every purchase, a child in need receives to safe drinking water for a year.