Silicone Rings Set Large and X-Large stretchy erection enhancement rings. Safe and pure for body and pleasure. Made using phthalate free, non-toxic materials Silicone. Diameter large ring is 1.5 inches. Diameter extra large ring is 1.75 inches. Do not wear a cock ring for more than 30 minutes. Cock rings give you a longer lasting erection by trapping the blood supply in the penis and intensify orgasms. Cock rings are ideal for men with premature ejaculation or erectile dysfunction. There are no guaranteed results from cock ring usage. Silicone Rings Set is a registered trademark for California Exotic Novelties. Sex toys and sexual wellness. New high resolution images added.