Super soft & super hard! Two types of gel are integrated. Succeeded in integrally molding extremely different gel materials with new technology! You can enjoy two completely different pleasures. SOFT GEL SIDE: Gently wraps in soft gel that is loosely entwined and delicate details. HARD GEL SIDE: Firmly tighten with hard gel that stimulates clearly and thick details. Whether you use it carefully one side at a time or compare it alternately, it's up to you how to enjoy it. SOFT & HARD, a luxurious cup that allows you to enjoy two opposite pleasures.