The Pink Lady STU (Stamina Training Unit) Fleshlight features a golden Fleshlight casing and the exclusive STU structure with a vaginal opening. It is perfect for experienced users looking to try something new, or for gentlemen who prefer a tighter experience. Due to its intense and stimulating structure, the STU is also marketed as an effective method for improving sexual performance and increasing endurance. The STU masturbator from Fleshlight is designed to replicate the incredible sensation of intercourse. Regular training with the STU can help prevent premature ejaculation and reduce performance anxiety.