Cobra Vibrating Silicone P-Spot Massager Black from the Master Series. This premium prostate exercising tool is ideal for anal massage and stimulation. Contoured to curve with the male anatomy perfect so it massages the prostate and the perineum simultaneously, while 6 modes of rhythmic vibration will send him over the edge. Once inserted, the Cobra will move with every thrust for maximum pleasure. Made of premium silicone, so it is non-porous and easily cleaned. Measurements 4.75 inches in total length, 3.5 insertable, 0.85 inch in diameter at widest point. Materials Silicone, ABS plastic. Color Black. Please note vibrator requires 2 AA batteries, not included.