Uterus.

It doesn't get much more real than this Little Red Riding Hood Gokusai Extreme Uterus Sex Onahole. The inside is designed with multiple textures for different kinds of sensations. Slide yourself in, squeeze right to the back and you'll reach the portio. With the aid of some lube and a little effort, you can push in even tighter and penetrate Little Hood's uterus. The outside feels plump and easy to hold, and is made with safe and odorless "love rubber" skin. The extremely durable material keeps your new masturbator looking clean and sharp, even after your inner wolf comes out.

The Little Red Riding Hood Gokusai Extreme Uterus Sex Onahole features:

Uterus penetration masturbator with hymen and portio
Length: 150mm.
Total width: 85mm.
Weight: 480g.
Includes lubricant
Non-air hole release type masturbator
Made in Japan