The tactical water bottle filter converts any water bottle with a straw into a filter bottle. Easy to use, simply attach to existing water bottle straw. See instructions on packaging for in depth details. Long lasting and economical, filters up to 100 gallons of water. Environmentally safe and friendly. Reduces waste by reusing water bottle, equivalent to 400 bottles of bottled water. BPA free. Aquamira filtration technology tested and certified To remove more than 99.9% of Cryptosporidium and Giardia cysts. Activated coconut shell carbon reduces waterborne chemicals, improves taste, and eliminates offensive odors. Miraguar antimicrobial technology suppresses the growth of bacteria, algae, fungus, mold and mildew within the filter media. Miraguard does not protect users against food borne or disease causing bacteria, viruses, germs or other diseases causing organisms. Bottle not included. Ideal for camping, hunting, tactical operations, etc. Never be stuck anywhere without the water bottle filter, it can mean the difference between life and death.