The 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. 5 different varieties each with different internal structures for a variety of great experiences. 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. With PILE, gently stacked triangular protrusions form its structure, bearing a soft sensation at the base and a distinct rippling stimulus as they space out at the tip. With POLYGON, multiple randomly constructed triangles embellish its surface for firm constriction and accentuated stimulus. With SPIRAL, varying sensations of the spiral form and the detailed ribs of each step of the walls combine to provide two separate stimuli catering to those adherent to both hard and soft sensations. With ZEN, fine ribs engraved around the surface combine to create a smooth intertwining sensation. The Sleeve comes in regular and "Hard" editions made from a firmer material that delivers a more intense experience. Water-based lubricant included; Soft thermoplasic elastomer (TPE) interior; Made in Japan.