This masturbation sleeve gives great stimulations for both the man and the woman. For the man, he can slip the sleeve over his penis and stroke himself to great pleasure. The woman, can place the sleeve over her favorite vibrator or even her partner's penis and receive great stimulations during penetration. The secret is the soft elastomer nubs outside of the sleeve that consistantly rub and massage. If the man wants to feel those nubs against his penis just turn the sleeve inside out.