Medium cockring. Comfortable and stretchy ring. Improve sexual performance. Put on the penis or the balls. Dimensions package 3.66" x 3.86" x 0.43" Weight package 0.85 oz Product dimensions 4.5 x 4.5 x 1 cm Product weight 7.00 gram Product diameter 4.5 cm Inner diameter 3.0 cm Waterproof Yes Splashproof Yes Phthalate free Yes Materials silicone