When you're in an emergency survival situation, there's no substitute for fresh water. This Emergency Travel Water Purifier filters up to 1000 liters of contaminated water, removing 99.999% harmful bacteria like colibacillus, legionella, salmonella without the use of iodine, chlorine, or any other harsh chemicals. You can connect this purifier to a water bottle or drink directly from a river, stream, or lake. This amazing survival device may just save your life one day. It's the perfect gift for someone who loves camping, hiking, or any general survival enthusiast.