The large Iyashi no Rio is an onahole intricately designed to create a total stimulation experience. "Iyashi" means "healing" and Rio is guaranteed to tend to your woes. The narrow entrance tightens you into the right frame of mind, before the side nubs stimulate and stroke your member as you go in deeper. Finally, the curving passage creates a truer-to-life feeling, and the end of the hole, with its vacuum-piston effect, will finish you off with a bang.
The Iyashi no Rio Onahole features: