The phot r vented helmet mount for gopro hero allows you to attach your gopro to any vented bike ski kayak or similar sports helmet the adjustable strap makes mounting the camera quick and easy one size fits all helmets attaches to any vented helmet adjustable strap makes for quick and easy mounting one size fits all helmets lightweight and convenient to carry allows you to attach your gopro to any vented bike ski kayak or similar sports helmet the strap allows you to adjust length