Enhancer Cockring 2 Pack features two silicone rings, one even with a bow tie for that black tie affair. Both rings are made from 100% soft, silky silicone and are very stretchy to accommodate a variety of penis sizes.  The non-vibrating ring surrounds the base of the penis and separates the testicles.  The vibrating ring features a removable bullet and small, stretchy connected butt plug.