Water Bottle Plus Filter. 22 oz. capacity. Clear contoured shape and soft squeezable design with Bite Me valve and black protective cover with finger ring. Comes with one Green Line Series II Frontline Replacement Filter. The filter provides maximum protection from bacteria, Cryptosporidium and Giardia with up to 800 ml/minute flow rate. Miraguard Antimicrobial technology suppresses the growth of bacteria, algae, fungus, mold, and mildew within the filter media. Filters 120 gallons.