Apply lubricant to the opening of the silicone masturbator and the penis. Insert the penis into the opening, move the masturbator up and down and give in to the breathtaking sensations that the nubby structure gives you. The highly flexible, soft silicone is extremely stretchy, adapting to any size and enveloping you completely. The exterior also fits snugly in the hand and is also flexible, allowing a man to create more gripping sensations with a squeeze of the hand. The waterproof design allows the silicone masturbator to be submerged in the bathtub or used for splashing adventures in the shower.