Clutch is the product of over 8 years of c-sling development. It has thicker walls for more support, the super-soft material grips all the way around. More push it up and out, a bigger bulge!. With more cushion everywhere, Clutch's best feature is a thicker rubber around the base of the shaft that plumps up the shaft. MATERIAL: plus+siliconeTPR/silicone blend DIMENSIONS: Width:2" Height:2.75" Depth: 2.25" Main Hole Circumference:4.25 " Shaft Hole Circumference:3.75" Ball Hole Circumference:3.5"