The Fleshlight STU™ (Stamina Training Unit) masturbation product is a sex toy for men specifically designed to replicate the incredible sensation of sexual intercourse in order to help you find your rhythm and obtain peak sexual performance. With our patented SuperSkin® masturbation sleeve and a specially designed inner canal texture the STU provides the most intense and pleasurable training experience possible. Easy to use and clean with proper care the Fleshlight® male sex toy will last a lifetime. Safe non-toxic & phthalate free. Over 2 million sold worldwide. Discreet design allows for private storage.