The crystal clear cup is full of super tough spiral obscene wheel patterns! The dense serrated spiral folds are matched with hard elastic material, and the strong helix pattern pushes the pleasure of each thrust to the extreme. It has a very powerful sense of insertion, just like being swallowed by a waterspout beast, breaking through the limit of pleasure! WARNING: Keep the product away from children. DO NOT expose the product to humid places, direct UV or sunlight for an extended period. Product is a reuseable after wash. DO NOT use this product with more than one person. DO NOT place any object inside the cup for use. Safety Precautions: Always clean the product before and after use. We recommend using water-based lube with your toy