It's back and it's bigger than ever. Derived from actual customer experiences and comments, the Men's Pleasure Rocker XL has a larger, more filling shaft that gradually increases in girth. The same powerful vibrations delivered via the 4 speed controller literally quake through the shaft and cup. Securely mounted on a solid rocker base. waterproof. Body-safe TPR and ABS. Phthalate Free. 2 AA batteries not included.