Katadyn Befree Replacement Cartridge, Blue, one Size (8019641)

0.1 micron water filter removes harmful organisms like bacteria 99.9999% and protozoa like giardia & cryptosporidium 99.9%, surpassing epa standards ez-clean membrane is simple and easy to clean by simply shaking or swishing the filter to clean debris, no back flushing or extra tools required stay clean drink nozzle keeps the mouthpiece clean and sanitary Sport type: Camping & Hiking International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.