Fleshlight Stamina Training Unit STU Value Pack. Practice makes perfect, especially in the bedroom. The STU was specifically designed to replicate the intense sensations of intercourse, which can help users increase sexual stamina, improve performance and techniques, and heighten and intensify orgasms. Specially designed sleeve for male performance enhancement. Body safe material built to last. Exclusive SuperSkin sleeve provides hyper-realistic feel. Reusable and easy to clean. Patented design creates intense suction sensation. Practice makes perfect, especially in the bedroom. The Endurance Jack was specifically designed to replicate the intense sensations of intercourse, which can help users increase sexual stamina, improve performance and techniques, and heighten and intensify orgasms. Made in the USA. Value Pack includes stroker, Lube 4 ounces, renewing powder and cleaner.