Filter replacements available at www.myguzzywebsite 22 oz. Tritan™ Copolyesterwater bottle – BPA free Made with NASA technology using a revolutionary filter system that removed parasites and reduces bacteria Filter attaches to screw-on flip-and-flow lid Filter is good for up to 120 fills Just tilt back, squeeze gently, and sip like you would through a straw Only use with potable water (water that is biologically safe).While supplies last!