One of the most popular onahole in Japan: Seventeen masturbation toy from Toysheart. SevenTeen is designed specifically for those who's after a great experience while still having it feel realistic. The SevenTeen realistic artificial vagina is a high-quality two-layer masturbation sleeve designed to give you a soft feeling with a bumpy first layer to create a tight and sensational pull on your member. The second layer adds even more by stimulating the head separately to add even more sensation! For being real, there is no ribs or studs in the hole, the most important element that stimulates penis is by the tightness and the shape of the hole. You have to give SevenTeen a try. This two layer hole is made of the highest quality of material and technology.