TENGA 3D Sleeve is a reusable male masturbation toy that is easy to clean, with award-winning style that makes it as beautiful as it is pleasurable. The interior is made from realistically soft and super stretchy textured material that delivers knee-trembling sensations. With MODULE, protruding blocks rub along you for a firm sensation, while the receded blocks cling onto you accentuating the tone. The blocks cascade in a contrasting flurry of stimulation providing a strong sensation with a solid finish. Suggested to use with Hole Lotion from Tenga.