1. 2-in-1 design, it is both a bicycle bottle holder and a hidden mounting bracket for the locator, making it easy to find your bicycle outdoors 2. The product is made of PC material, which is sturdy and durable; 3. The bottle is designed to fit snugly and not easy to fall; 4. The arc design makes it difficult to scratch the surface of the bottle. You can carry general mineral water, cola, Sprite, and water bottles 5. Compatible with a variety of models with bottle holes, suitable for mountain bikes/folding bikes 6. Note: The product only includes the bracket, and the locator and water bottle are not included.