Specifications: Made of Carbon Fiber, very durable to use. Water bottle holder, forming one modern design. Super toughness, encountering strong impact will not be deformed and broken. With perfectly streamlined, super Lightweight. Suitable for road bikes and mountain bikes. Suitable for all kinds of glass bottle cup bottom diameter greater than about 55mm. Item Name: Bicycle Water Bottle Holder Material: Carbon Fiber Features: Durable, Lightweight, Modern Design, Tough Fit for: about 600cc-750cc Bottle Height: 148mm/5.83" (Approx.) Width: 73mm - 80mm/2.87" - 3.15" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Included: 1 x Bicycle Water Bottle Holder