The new, easy-to-use, ShockStrap will provide you with more air, controlled landings, and greater comfort. An elastic shock absorber is built into the strap allowing the rider to tighten the belt much more than any regular kneeboard belt. This lets the rider spring off the wake and compress when landing without the belt loosening. 3" wide. Spring off the wake & compress when landing Belt won't loosen when you land | O'Brien HydroSlide Kneeboard Shock Strap