The Floaty Backdoor for HD HERO from GoPro enables your HD HERO action camcorder to float in water when it's encased in its waterproof housing, which comes with most configurations of the HD HERO. The Floaty attaches to the backdoor of the waterproof housing via strong 3M-brand adhesive.
A backdoor is included, so you can change out your existing one and keep that one in reserve for float-free applications. The Floaty is safety orange, so it'll be hard to miss when the camera ends up bobbing on the surface of the water.
Note: Will not support the weight of the suction-cup mount. Not recommended for high-impact water sports.