The McNett Aquamira Tactical Frontier Pro Water Filter is the perfect tool for providing clean, drinkable water on the go. This ultra-light, portable, pump-free water filtration system is great or hikers or mountaineers and cylists. Use to drink water directly from the source or to fill up bottles and hydration packs. Can also be used as gravity water filter. It uses an activated coconut shell carbon filter to treat up to 30 gallons of water and Miraguard Antimicrobial Technology prevents build-up of bacteria, mold and mildew inside the filter itself. The filter removes 99.9% of giardia, cryptosporidium and other pathogens from the water, making it safe to drink. Bring it with you to be sure to have water available even on the most far out adventures.