Prostatic Play Rover Silicone Cock Ring and Prostate Plug. This silicone cock ring and butt plug provides targeted P-spot stimulation and erection enhancement in one tool. The premium material is non-porous, body safe, and sterilizes easily. Classic shape has a slightly tapered tip and slim shaft, while the firm ring provides maximum erection enhancement. Measurements: 7.35 inches in total length, 3 insertable, 1.3 in diameter. Ring measures 1.5 inches in diameter. Material Silicone. Color Black.