This silicone stimulator is created to stimulate the most sensitive parts of your shaft for an intense masturbation experience. Soft, flexible silicone snugly surrounds your shaft with vibrating pleasure, just tighten your grip and fully enjoy the massaging ribs and stimulating pleasure bump. The Vibrating Silicone Stimulator is specifically designed to stimulate the frenulum spot along the underside of the penis. It is very bendable to accommodate any size. One simple press of the button on the removable bullet activates a super-strong, stimulating vibration.