Description Material: Made of high quality fiberglass, strong structure, durable, can use long time. High Quality: The water bottle holder for bike sturdy hold that will ensure that the bottle stays firmly place even when riding fast, bumpy paths. Smooth Surface: The surface of the bicycle water bottle holder is smooth, donot rubbing or scratching against your water bottle. Lightweight, Portable: light weight material, good toughness, and durability, suitable for universal water bottles. Simple Install: for vertical and horizontal mounting. Kettle rack has good extensibility. Specification: Material: Fiberglass Size: 8cmx14.8cmx7cm/3.15inchx5.83inchx2.76inch Package Includes: 1 Bottle Cage Note: Please allow slightly errors due to manual measurement and different monitors.