Made from signature Flex-TPR so it*s lightweight and compact but still thick and fleshy. The bottom has a thick rubbery base that rests under your sack to push your package up and away from your body. The padded base doubles as a ballsing that*s designed to push down on your sack for a stretching sensation. Measures 3.25 in. high. with an inside circumference of 3.5 in. that stretches to fit.