This mocha-color STU Fleshlight adds a bit of exotica to a pleasurable yet useful experience. The Stamina Training Unit (STU) replicates the incredible sensation of sexual intercourse. Training with the STU helps with premature ejaculation and performance anxiety, and helps users achieve mind-blowing orgasms. Exclusive Gold Fleshlight case. Vagina orifice. Rear cap can be loosened or tightened to modify suction during use.