Stamina Training Unit Butt: Fleshlight’s Ultimate Endurance Toy - Fleshlight

Stamina Training Unit Butt: Fleshlight’s Ultimate Endurance Toy

We all know that practice makes perfect in any of life’s endeavors–skill in the bedroom is no exception to this. At Fleshlight, we now carry an anal Stamina Training Unit (STU) designed to boost your longevity regardless of what hole you prefer.

The STU was created to replicate intense sensations you experience in intercourse, which may boost your sexual stamina, heighten your performance, and ultimately intensify both you and your partner’s orgasms.

When you use the Stamina Training Unit by Fleshlight, not only can you improve your sexual stamina and techniques, you can also experience intense orgasms that can only be achieved by using Fleshlight products.

As our #1 selling product worldwide, the STU is popular for a reason–there’s simply nothing else like it!

Keep reading to learn more about its sleeve and dimensions.

Stamina Training Unit Butt Breakdown


The STU Butt sleeve has a tight anal entrance and an insertable length of 8.5 inches (21.6 cm) and a snug canal diameter of 0.45 to 0.6 inches (12-15 mm). Its interior consists of large, pillow-like bumps that will push even the most veteran of ladies men to their limit.  


As you can see, the case itself measures at 10 inches (25cm) long and 4 inches (10cm) in diameter.



As you thrust in and out, you’ll notice the dense bump texture bestows exceptionally intense stimulation to the penis. The bumps massage the head and shaft of the penis from all sides, creating an overwhelming stimulation that is accompanied by a strong suction effect that’ll test your endurance with every use.

Pleasure + Self-Improvement Training

Remember, the Stamina Training Unit was designed as both a pleasure toy AND training device to help men overcome premature ejaculation and performance anxiety. 

Although you may not last long in the beginning, don’t despair! With consistent training, you may develop the ability to control your speed of ejaculation. 

What’s Included with the STU Butt?

Now that you’re ready to purchase your new sexual training tool, here's what you can expect once your package arrives at your home.

Don’t wait! It’s time to DRASTICALLY improve your sexual endurance and confidence today. Click here to get your STU.

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