1. Light and strong material: Carbon fiber and nylon fiber are mixed and made of material,which is strong, lightweight, non-deformable and corrosion-resistant, effectively reducing the weight of long-distance travelers.2. Function: When driving on rugged terrain, it can ensure that the water bottle is firmly fixed in its position.3. Advantages: Easy to install, without any tools, designed to provide a firm bottle holder and simple bottle disassembly.4. Size: About 20*10*10cm/7.87*3.94*3.94 inches, suitable for most bicycle water bottles5. Wide application: The cup holder can be placed almost anywhere on the bicycle,which is very suitable for those who need to reduce the burden of riding.Specification:Product name: Bottle cageColor: White, red, purple, green, black, blueMaterial: 40% carbon fiber, 60% glass fiberSize: (About) Inner diameter: 74cm/29.13 inches, total height 14cm/5.51 inchesThe package includes:1 piece * Bottle cage2 pieces * Screws