[Totally Hidden for ]: 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, the 6-sided anti-theft screws and screwdriver design are also not easy to disassemble. [Special Customised Spaces]: Our 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 . (Note: for not included). And for for bike with drainage structure to prevent stagnant water, the mounting direction also prevents rainwater from splashing in, providing waterproof protection. [Signal Strength is not Affected]: The bike for hidden is made from glass fibre reinforced nylon, which will not affect the functionality of the for while you are trying to track your bike. No need to worry about signal strength issues with the for for bike. [Rugged & Bracket]: for Air tag bicycle water bottle cage made of glass-fiber reinforced nylon, for 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. for Air tag bike case can easily carry more than 5.0lb weight. Material: plastic colour: black Package Contents: 1 x Bike Mount Hidden 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.