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Hands-Free Gravity Water Filter System: The BeFree Gravity 3L is a complete water filtration system for backpacking, camping, and hiking. Fill, hang, and drink - no pumping, squeezing, or power required.
Removes Bacteria and Protozoa: The 0.1 micron EZ-Clean hollow fiber filter processes water from streams, lakes, and rivers at up to 2 L/min. Up to 1,000L capacity for reliable performance in the backcountry.
Lightweight and Packable: The 3L collapsible water bag packs flat when empty and is ideal for solo or small group trips. Hang from a branch, pole, or anchor point for easy setup anywhere.
Easy to Use and Clean: Fill from your water source, hang, and let gravity do the work. Clean by shaking or swishing the filter in water - no tools or disassembly required.
Trusted Since 1928: Katadyn has been delivering clean water solutions for nearly a century. Used by hikers, travelers, and professionals worldwide, our products are built for reliable performance wherever you go.

The Katadyn BeFree Gravity 3L is a complete hands-free water filtration system for backpackers, hikers, and campers who want clean water at camp without pumping, squeezing, or using power. Fill the 3-liter collapsible bag from any clear stream, lake, or river source, hang it from a branch, trekking pole, or anchor point, and let gravity do all the work. The 0.1 micron EZ-Clean hollow fiber membrane removes bacteria, protozoa, cysts, and sediment at up to 2 L/min flow rate with a total capacity of up to 1,000L. The collapsible bag packs completely flat when empty, making it ideal for solo and two-person trips where pack space and weight are at a premium. Setup takes seconds with no assembly required, and field cleaning is simple: shake or swish the filter element in water to restore full flow with no backflushing tools. BPA-free throughout and compatible with standard hydration hose fittings, the BeFree Gravity 3L integrates seamlessly into any backcountry camp setup. Whether you are filtering water for drinking, cooking, or resupply, the BeFree Gravity 3L delivers reliable, hands-free filtration every time. Trusted by Katadyn since 1928.