FEATURES: 1. Keep Moving: Don’t stop to filter–just scoop and go. Engineered specifically for high-flow, easy drinking. 2. Two-Stage Filtration: Fast-flow hollow fiber removes pathogens, particulate & microplastics; activated carbon reduces chemicals, tastes and odors. 3. Quick-Connect: Compatible with any hydration reservoir system on the market. 4. Proven: Used by the U.S. military for more than a decade; rugged ultrasonic welded housing for reliable durability. 5. Effective Against: Bacteria (99.9999%), protozoa (99.9%) and particulate (dirt, microplastics). Meets U.S. EPA drinking water standards* and NSF protocol P231 testing standard for removal of bacteria and protozoa. *U.S. EPA Guide Standard and Protocol for Testing Microbiological Purifiers Made in the USA of US and Imported Materials