Lifestraw Peak Series Personal Water Filter For Hiking, Camping,, Mountain Blue We took the most popular outdoor water filtration device on the market, and reimagined it for added versatility, sustainability, a better grip experience, and updated design and colors. This ultra lightweight personal water filter straw is made from high performance premium sustainable materials, it has no extra parts to keep track of, and it boasts and enhanced flow rate for easy sipping. At 2 ounces and 5 years of safe water in the palm of your hand, no backpack, pocket, emergency bag, or glove compartment should be without one.? Drink directly from lakes, rivers, and streams or fill a container to use your LifeStraw on the go with protection against bacteria, parasites, microplastics, silt, sand, and cloudiness. Rigorously tested to meet drinking water protocols established by the US Environmental Protection Agency (EPA) and NSF Interational/ANSI. Your purchase has impact: For every LifeStraw product purchased, a school child in need receives safe water for an entire school year. 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 Highly versatile: Can also be attached to water bottles and to standard gravity hoses with removable threaded bottom cap Long-lasting membrane microfilter will last up to 1,000 gallons (4,000 L) of water, that?s enough drinking water for an individual for over 5 years