Lightweight and Sturdy Material: Plastic material, perfectly streamlined, won't scratch the bottle, non-deformable and corrosion-resistant. Snakeskin paint is stylish and super tough. Less likely to scratch your water bottle than other aluminum alloy water racks! Effective weight loss for long-distance travelers. Grip: A secure and sturdy bottle retention system keeps your filled bottle securely in place while riding, whether you're riding fast on the road or on a bumpy trail. Good toughness, will not deform or break when encountering impact. Dimensions: The diameter of the bike bottle holder is approximately 80mm (3.15 inches). The size is 140*80*80MM. One-piece molding, suitable for various cups and water bottles with a diameter of 55 - 80mm (1.96 inches - 3.15 inches). Tobefore bicycle water bottle holder is suitable for mountain bikes and road vehicles to carry various water bottles around 500ml. Not suitable for water bottles with a diameter larger than 80MM (3.15 inches). Note: Please check the desired size before purchasing. Stay Hydrated On The Ride: Quick and easy access to bike water bottle holder when needed. Ideal for road bikes, mountain bikes, hybrid bikes, touring bikes and e-bikes. Get 2 bottle cages to keep you hydrated on super long rides so you can make it through the long haul!