XCSOURCE® Waterproof Case adjustable wrist strap (fixing belt wrist) elastic velcro for GoPro HERO 1 2 3 3+ 4 OS30 (Electronics)
Fixing is based on a wide velcro through a bouble and folded on the wrist; Tien very well. Just be steady when shooting .... As it is for diving, I preferred the solution daccrocher mask because the wrist, it was a little to give seasick ... By cons
