The Get-A-Grip ball gag is designed to actually fit the mouth. Never satisfied with the standard ball gag design, "Scott Paul" has designed this improved version. The 100% rubber ball has thick flexible "fins" around its circumference. These fins provide a space for the teeth to fit into. The result is a snugger fit, a sexier look, and less jaw fatigue.The rubber ball has an outside diameter of 2 inches. The diameter at the base of the fins is 1 and 1/4 inch. The Standard version uses a neck strap made of nylon webbing. The nicely finished webbing is secured with velcro. Ball comes in Red, Black and Lime Green.