Silicone Tri Snap Erection Ring Black from California Exotic Novelties. Bulk weight 0.6 ounce. 9 inches by .75 inch. Stretchy and comfortable Silicone erection enhancer. Soft and smooth, thick and durable Silicone. Fully adjustable, three snap design. Heavy duty, nickel free hardware. Materials: Silicone enhancer ring, Nickel free Iron rivets, snaps