UPGRADES YOUR GRAVITY SYSTEM TO USE BEFREE FILTERS: The Katadyn BeFree Gravity Upgrade Kit lets you swap a BeFree cartridge into your existing Katadyn Gravity Camp 6L or Base Camp Pro 10L reservoir for faster, easier group water filtration. BEFREE 0.1 MICRON FILTRATION IN A GRAVITY FORMAT: Brings BeFree EZ-Clean hollow fiber 0.1 micron filtration to your reservoir. Filters out sediment and fine particles at up to 2 liters per minute. Clean by swishing in clean water. QUICK-RELEASE ATTACHMENT TO YOUR RESERVOIR: Connects directly to existing Gravity Camp 6L or Base Camp Pro 10L systems. Quick-release valve, simple install, and field-cleanable so you can keep filtering on multi-day group trips and basecamp use. REQUIRES A BEFREE CARTRIDGE SOLD SEPARATELY: Drop in a Katadyn BeFree replacement cartridge (sold separately), snap the kit onto the outlet hose of your gravity reservoir, hang from a tree, and let gravity filter into bottles, bladders, or cookware. 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.