[Totally Hidden for Airtag]: bike bottle holder is a generation for airtag bike holder to hide your for Airtag in an unexpected place, completely concealed / stealthy inside the cage of your bike for Airtag water bottle. Excellent great idea, no one can find your for Airtag 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 Airtag and fits perfectly with no extra space, won't wobble or rub and scratch your for Airtag. (Note: for Airtag not included). And for Airtag 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 Airtag holder hidden is made from glass fibre reinforced nylon, which will not affect the functionality of the for Airtag while you are trying to track your bike. No need to worry about signal strength issues with the for airtag holder for bike. [Rugged & Durable Bracket]: for Air tag bicycle water bottle cage made of glass-fiber reinforced nylon, for Airtag holder bike is light weight (1.68oz / 48g), high strength and aging resistance, so strong that it won't be 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