Stretchy and comfortable Silicone erection enhancer. Soft and smooth, thick and durable. Fully adjustable, three snap design. Heavy duty, nickel-free hardware. Added scrotum strap for support and stamina. Materials Silicone ring enhancer, Nickel-free Iron rivets, snaps. 8.5 inches by .75 inch scrotum ring. 1.25 inches inner ring diameter.