This short type is so you can enjoy the deep feeling. The quick short stroke makes it possible to poke the large protrusion set into the deepest point and stimulate the cup. Ultra-hard design with a sharp and stimulating design with special details and hard gel for a crisp and stimulating pleasure. Give this opportunity to experience the hardest feeling that evolved by a bold renewal. About the Size: This product is designed to be about 1.4 inches (35 mm) shorter than the regular size cup series, but it is not a cup for those with smaller sizes. Even those who feel regular sized cups just right, this cup series is designed to provide ample enjoyment.