The Ma-Sai series onacup have the outer appearance of a horn. This slight tapered curve is designed to help the holding of the onacup during use. The internal tunneling starts out with large ribs that changes to tiny nubs as the tunnel narrows into the a nub lined end chamber. A switch at the end activates a small vibrator to add a extra dimension to your experience.
This version is the Panther onacup.