Protects against 99.999999% of bacteria (including E.coli, Salmonella), 99.999% of parasites (including Giardia and Cryptosporidium), 99.999% of microplastics, silt, sand, and cloudiness Enhanced microfilter performance helps to reduce clogging from sand and silt for better flow rate Ultralight and durable, pack it anywhere for your backup hydration, emergency, or on-the-go needs Extreme durability: premium materials make it tougher and ultra leak-proof Unlimited shelf life means no need to worry about how long it’s been in your emergency go-bag unused