Food Grade Material： 5 Stage advanced high-performance filter included：Medical Grade Hollow Fiber UF Membrane Coconut Shell Activated Carbon Beads and Medical Grade PP Cotton. Made by durable food-grade plastics: BPA Free Tritan. Be safe for human consumption. Filtration accuracy is 0.01 microns which can provide you with a reliable source of pure drinking water at any time and anywhere.

Safe Water Anywhere: This versatile water bottle helps to provide healthy drinkable water in harsh outdoor conditions and find direction with built-in compass on the top. It is great for traveling backpacking camping and emergency kits. Especially in an emergency.

Leak-proof: Leak-proof lid with a mouthpiece can be folded into the cap which brings convenience and cleanliness.

Long Lifespan & Replaceable: Up to 396 gallons/1500L (depend on water quality). With integrated replaceable filter (be sold separately). Replaceable filters save you money as the water bottles themselves have a very long life or nearly 8 months of continuous use.

Method Of Use：When firstly using rinse the carbon filter and suck 4-5 times to get the water up through the filter.Please free contact us with any questions.]