Versa Flow Water Filter System Long-lasting - Rated to filter 100,000 gallons of water. The clear cleaning window allows you to back-flush or clean the water filter whenever it is dirty. Advanced Filtration: Equipped with a hollow fiber membrane, the Versa Flow effectively removes 99.9999% of bacteria and 99.99% of protozoa, ensuring your water is clean and safe. Multi Use Options: This system can be used as with a personal straw, a gravity filter, or in-line with a hydration pack, providing flexibility for various scenarios?whether you?re hiking, camping, or preparing for emergencies. Versatile: Weighing just a few ounces, the Versa Flow is easy to pack and carry, making it perfect for travel and outdoor adventures.