The path to reliably clean drinking water begins with CamelBak’s Eddy® filtered by LifeStraw®. Whether you are a couple days into a backcountry trip or looking for an everyday water bottle, you need a trustworthy source for safe water wherever you roam. Water passes through two separate stages of filtration - the Hollow Fiber Filter removes bacteria, parasites, and microplastics and the Ion Exchange Filter reduces lead, bad taste, chlorine and other unwanted chemicals. Leak-proof when closed and spill-proof when open, the universal Eddy straw cap and bite-valve interface delivers a high flow for steady hydration when you need it most. The main vessel is made with Tritan™ Renew, a highly durable and lightweight plastic made with 50% recycled material. A more sustainable solution, Tritan Renew is made using a recycling process that’s more efficient than standard mechanical recycling, producing a superior material with less demand on finite resources. It's odor and stain resistant and free of BPA, BPS, and BPF. Two Stages of Filtration: Stage 1: Hollow Fiber Membrane Removes 99.999999% of bacteria (E. Coli, etc.) Removes 99.999% of protozoa (Giardia Cryptosporidium, etc.) Removes 99.999% of microplastics Filters 4,000 liters (1,000 gallons) Stage 2: Ion Exchange Filter Reduces chlorine and lead Reduces bad odor and taste Reduces organic chemical matter (Pesticides, Herbicides) Filters 100 liters (25 gallons) LifeStraw and CamelBak Give Back: one product, one child, one year of safe water Not for use by children under age 12 without adult supervision CamelBak Got Your Bak™ Guarantee: If we built it, we'll Bak it™ with our lifetime guarantee.