The Vapur MicroFilter and Water Bottle is exactly what your hikes and camping trips needs. This unique roll-up water bottle and filtration system packs away small when empty and offers cutting-edge water cleansing when full. Fill it with a liter of water from any natural or man-made source - the Vapur MicroFilter removes 99.9999% of waterborne bacteria ad 99.9% of protozoa. Each filter is good hundreds of liters. Go ahead - go forth! About Vapur Reusable water bottles take up tons of space in your kit, right? Wrong! Vapur is the anti-bottle, designed to act as a world-class water bottle when full, and vaporize when empty. These uniquely rollable and foldable water bottles are everything you love about portable water - dishwasher safe, environmentally friendly, durable, and simple - and nothing you don"t. Vapur is based in California, created and maintained a by a dedicated group of fitness freaks and environmental geeks who know how to get it right. * Chemical-free water filtration in a Vapur water bottle * Removes 99.9999% of bacteria and 99.9% of protozoa * Purify water from lakes, rivers, streams, or taps * Collapsible bottle goes anywhere and holds 1 liter * BPA-free, made in the USA