 "GoPro Floaty Backdoor - floaty backdoor" " GoPro backdoor AFLTY003 Digital Camera Accessories CDWG.com
"This easy-to-spot flotation attaches directly to the housing backdoor to keep your GoPro afloat. Great for snorkeling, surfing, wakeboarding or other deep-water activity." 
 "GoPro LCD Touch BacPac Removable Display - ALCDB-401"