The Module is male masturbation sleeve from Tenga’s 3D line of reusable , stretchy, elastomer pleasure products. This product features random elevated blocks on the inside of the sleeve with the idea being that the protruding blocks produce a firm sensation, while receding blocks grip you for a soft sensation.
Here is an excerpt from Karen Blue’s review of the Tenga 3D Module Male Masturbation Sleeve:
“He reported that the squares added to stimulation. The Module warmed up really nicely. The end is not open and the suction added to the sensation, it also added a sexy sound to the experience. The skin of the hole was thin enough to create adequate pressure to get him off much better than with just his hand alone. He said it was much easier to maneuver than the fleshlight and he enjoyed it much better being that it was not so cumbersome.”