Prostatic Play Nova Silicone Cock Ring and Prostate Vibe Black from the Master Series. This targeted prostate stimulator is ergonomically curved and powered by a powerful bullet for the ultimate in erection enhancing anal pleasure. Just slip the ring behind your cock and balls for an improved erection, and insert the specially curved stimulator. The bullet has an easy one touch button, and it is made of premium silicone for your health and pleasure. The ribbed stem provides additional stimulation. Ideal for increased orgasm intensity. Measurements 5 inches in total length, 3.25 insertable, 1.4 inches in diameter at head. Cock ring measures 1.5 inches in diameter. Materials Silicone, ABS plastic. Color Black. Please note vibrator requires 3 LR44 tab batteries, included.