in.About the product The Bumper is a system of two parts: The Bumper Thrust Buffer and the Donut Buffer. Either one can be used independently or together to create a thick and protective cushion for when the thrusts get deep. The Bumper acts like a cushion between two partners to absorb some of the bumping and provide the sensation of maximum depth for the penis. The Bumper fits around the penis and is held in place by the testicles. The Bumper is also designed to be adjustable so users can add more cushions-the Donut Buffers-to suit their depth requirement.in.