Features:Water bottle holder， forming a modern design!Super toughness， encountered strong impact not deformed and broken;With perfectly streamlined， plastic water bottle or aluminum used to carry， lightweight， suitable for road bikes and mountain bikes.specifications:Size: 144 * 72 * 72mmNet weight: about 35gMain color: blackMaterial: carbon fiberFit for: bottle 600CC 750CC appropriate ~Suitable for all kinds of glass bottle cup bottom diameter greater than about 55mmPackage Included:1 * fiber bicycle water bottle holder carbon Drinks