The pulse and rhythm of this premium vibrating sound will certainly send you over the edge. Made of premium, phthalate-free, and non-porous silicone. Flexible so it bends within the body. The sound has a strong vibration throughout. Simply insert the sound and turn on the vibration. Note: We recommend using Surgilube for lubrication. Measurements: 6 inches (15.2 cm) is the total length, 2.5 inches (6.35 cm) insertable length, 0.22 inches (.55 cm) in diameter at head, 0.14 inches (.35 cm) in diameter at shaft Material: Silicone Color: Black Note: Requires (5) tab batteries, not included