BikeHard Challenger Hydro Water Bottle Cage Black/RedBikeHard Challenger Hydro Cage is made from high-impact polycarbonate and is designed to resist wear and fatigue normally associated with alloy cages without the prohibitive cost of carbon fiber. Fits a variety of cycling and non-cycling specific bottles, including some larger sizes. Available in a wide rang of colors to match nearly any style of bicycle.817616022025