Hydrapak 42mm Filter

Drink Clean. Travel Light. Hunt Hard. When you're miles deep in the backcountry, carrying extra pounds of water isn't an option—and getting sick from bad creek water will end your hunt instantly. The HydraPak 42mm Filter Cap threads directly onto your soft bottles and water bladders, turning them into a high-speed filtration system. Fill up at any creek, twist the cap on, and get straight back to tracking. Why It Belongs in Your Pack Ultra-Lightweight & Compact: At just 2.0 ounces (57 grams), it packs down to almost nothing and won't weigh down your chest rig or haul pack. Kills the Nasty Stuff: Hollow fiber membrane removes 99.99% of bacteria (like E. coli) and parasitic cysts from raw backcountry water sources. Fast Water Flow: Filters over 1 liter per minute so you can drink directly from the bottle or quickly squeeze clean water into your camp cook pot without wasting time. Rugged Dust Cover: Keep dirt, mud, and trail grime off your mouthpiece. Opens easily with one hand when you're on the move. Direct Thread Fit: Screws seamlessly onto HydraPak 42mm threaded containers, including Seeker water storage bags, Flux bottles, UltraFlasks, and SkyFlasks.