The outer case is made of black plastic. The top half is wide, again about 9 inches in circumfrence. The bottom half is narrower, molded into a handle – for obvious reasons. Screwing off the cap reveals a soft pink insert. The opening – for this model – is a vagina, complete with labia, when spread reveals a hole. Yes – this is where your penis goes. At the bottom of the handle is another screw-off cap. This is designed to control the amount of resistance. A nice little engineering touch. Again, more on that later.