Perfect Fit Brand Donut Cushion Bumper Black Donut is part of the Bumper Thrust Buffer line up. Designed to work with the Bumper to reduce penetration depth of the penis, it can also be used by itself in a number of applications. When used, as intended, as an additional cushion for the Bumper, it can be stacked to create greater effect of penis length reduction. Made of our incredibly soft and stretchy SilaSkin material, a blend of Thermoplastic Rubber TPR and Silicone, it provides a large surface area for bumping into your partner. Clean up: Wash thoroughly with mild soap and water. Safety: Safe with water based lubes. This product is not compatible with latex products. Please store separately. Perfect Fit Brand Products are sold, and intended for use strictly as adult novelty toys for entertainment. They are not intended for medical use and have not been clinically tested. No medical claims are warranted or implied by the use of these products. These products are Phthalate free, do not contain latex, and meet European EN71-3 toy safety standards