The pulse and rhythm of this premium vibrating sound will certainly send him over the edge time and time again. Made of premium silicone so it bends within the body. This highly powerful piece sends a strong vibration through the tip straight into you. Simply insert the sound and turn on the vibration. It is your domain. Measurements: 6 inches in total length, 2.5 insertable, 0.22 inches in diameter at head, 0.14 inches in diameter at shaft. Material: Silicone. Note: Requires (5) tab batteries, not included.