The b-Vibe Ringer Cock Ring and Prostate Plug offers a two-in-one sensation with a super flexible, silicone cock ring that safely restricts flow to the penis for harder and thicker erections, while the prostate plug intensifies the experience from the rear. The Ringer Plug is 100% waterproof for use in the bath or shower and allows for easy cleaning.Material: SiliconeProduct dimension:10.5 x 10.3 cmTotal length:10.5 cmDiameter:3.5 cm