NEO-STRETCH ballstretchers fit and feel amazingthe same shape as old-style neoprene ball-stretchers, same thickness, but made of our super soft stretchy silicone...wont strangle your sack, wear longer for more stretch, more play...NEO-STRETCH keeps those nuts down in their sack...all three styles have a fat lip around the edge so this one will not dig into your sack...unlike neoprene, NEO-STRETCH is rubbery, stretchy and feels like its part of your sack...NEO TALL is a 2 inch tall ballstretcher with a inside diameter just under 1.