I bought the hand strap for Nikkon AW100 because I at previous visits always had some concern about losing the camera in the water. If I wanted to pass the camera to someone else in the water, I was always a little nervous and had three times to check whether the camera is held firmly.
With the loop that is all now relaxed, the pool, the camera was thrown sometimes to an acquaintance, no problem. Processing looks neat and it generates enough buoyancy to hold the camera at the surface. For me a very strong buy recommendation!