BikeHard Carbolite D1 Carbon Water Bottle Cage RedThe BikeHard Carbolite Carbon Water bottle Cage is constructed entirely of high modulus carbon fiber. Its 3K weave exterior provides the tightest, most dense composite structure available from carbon. Reinforced bottom stopper and top flange hold the bottle firm and secure. Weighing in at 27 grams, it is one of the lightest strongest designs on the market.817616022094