The Prostatic Play Explorer Silicone Cock Ring and Prostate Plug Black is part of the Master Series. This silicone cock ring and prostate plug provides targeted P-spot stimulation and erection enhancement in one tool. The premium material is non-porous, body-safe, and sterilizes easily. The bulbous tip is ideal for direct prostate stimulation, while the firm ring provides maximum erection enhancement. Measurements Plug 4.5 inches in total length, 1.75 insertable, 1 inch in diameter. Cock Ring measures 1.75 inches in diameter. Material Silicone. Color Black.