Carry the LifeStraw Peak Series Personal Water Filter Straw, and you'll instantly have an easy way to make accessible water safe to drink wherever you venture. The lightweight, compact size makes this outdoor water filtration device extremely packable. Crafted from high-performance sustainable materials, the leak-proof design has no extra parts needed, and the enhanced flow rate ensures easy sipping. Drink directly from lakes, rivers, and streams or fill a container and sipping through the LifeStraw protects against 99.999999% of bacteria (including E.coli and salmonella); 99.999% of parasites (including giardia and cryptosporidium); and 99.999% of microplastics, silt, sand, and cloudiness. Enhanced microfilter performance reduces clogging from sand and silt. Long-lasting membrane microfilter lasts up to 1,000 gal. (4,000L) of water, meeting a single person's hydration needs for more than 5 years. Ideal for emergencies and on-the-go needs, the versatile Peak Series can be attached to water bottles and standard gravity hoses using removable threaded bottom cap. Tested to meet US Environmental Protection Agency (EPA) and NSF International/ANSI standards. 2.3 oz. Crafted from high-performance sustainable materials Leak-proof design with no extra parts Enhanced flow rate ensures easy sipping Drink directly from lakes, rivers, and streams Protects against bacteria, parasites and more Microfilter lasts up to 1,000 gal.