Bike bottle holder is a for holder to hide your for in an unexpected place, completely concealed / stealthy inside the cage of your bike for water bottle. Excellent great idea, can find your for except you. Bike for air tag holder and bike water bottle cage integrated design. Bike mount hidden is fully modelled to the size of the for and fits perfectly with no extra space, 't wobble or rub and scratch your for . For holder bike is light weight (1.68oz/48g), high strength and aging resistance, so strong that it 't be damaged if you accidentally step on it with your foot, or if your bike falls over, or hits other hard objects. Colour:Black Material:pc Package Contents: 1 * Bicycle Water Bottle Holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.