Freedom to drink, anytime, anywhere: Perfect companion on camping trips, hike, trail runs, biking tours, fishing trips, and more! Superior Filtration: Enjoy peace of mind! Katadyn's 1-micron water filter eliminates bacteria (99.9999%) and protozoa like giardia & cryptosporidium (99.9%), surpassing EPA standards. 100% PVC and BPA free. Compact & Portable: Collapsible 0.6L Hydrapak soft bottle flask packs down small to fit in tight spaces (pockets, purses, cycling jerseys, fishing vests). Effortless Maintenance: Stay clean drink nozzle keeps the mouthpiece sanitary; suitable for trail runs, biking, fishing, and more. EZ-clean membrane allows simple cleaning by shaking or swishing, eliminating the need for backflushing or extra tools. Efficient and Durable: Filters up to 1,000 liters (up to 2 liters/min) of contaminated water without chemicals, featuring free flow channels for quick hydration.