Flex your way into ecstasy! The Flexi-Vibe Sensual Spine Vibrator is made of soft jelly. The insertable length of the large ribbed vibe is 7.5in and has a diameter ranging up to 1.25in. Inside of the vibe is a flexible spine allowing you to shape it to your bodies curves. The base of the vibe has dial control allowing three speeds of vibration. Requires three AAA size batteries, not included. Bends, twists, and counters to please!