BikeHard Challenger Metal Matrix Water Bottle Cage White/RedBikeHard Challenger Metal Matrix Water Bottle Cage is designed to fit a wide variety of both cycling and non-cycling specific bottles. Made from the most durable alloy in it's class, the Challenger Metal Matrix is both stylish as well as lightweight. Available in a selection of colors that are easy to match to any color scheme. Weighs 26g.817616022001