The Fleshlight STU, or Stamina Training Unit, is designed specifically to overstimulate the penis, with the aim of helping the user improve his sexual stamina and last longer in bed. It is recommended to men who would like to learn to control their ejaculation, or those who prefer a very intense Fleshlight.
Stamina Training Unit Review
Sleeve and Texture
The STU is available with a choice of the ‘Lady’ pussy orifice or, for those who prefer to keep it simple, the simple ‘Pure’ hole which does not attempt to imitate a real orifice.
The sleeve is fairly simple in design, with just one texture and a regular width all along the canal. It is one of the tighter Fleshlight sleeves, with a width of approximately 0.6” (15mm), and is lined along the whole length with rounded, raised bumps.
These bumps are densely packed and surround the penis on all sides. Once you are inside the sleeve, there is simply no escape from them.
How the STU Feels
As the name suggests, the STU is very, very stimulating. The bumps surround the penis from all sides, and all along the length, so the stimulation is continuous and never lets up at all. It’s like a massage from all sides at once, with tiny pressure points that become more and more pronounced as you move towards orgasm.
I could not last long in this sleeve; it was too stimulating. The orgasm was great but it all felt a little too fast and intense.
This Fleshlight was designed for a purpose, and I’m convinced that it would help a great deal with increasing sexual stamina and reducing premature ejaculation. If you are using this sleeve for this reason then you will need to stop and start a lot in order to control your orgasm – it really is that stimulating. By using it regularly, gradually increasing the amount of strokes and perhaps withdrawing before ejaculation, I’m sure that it would make longer lasting real sex a lot easier.
Fleshlight STU Texture
However, as a masturbation sleeve I found it a bit too intense. With this dense bumpy texture there is no room for a long, slow build up and, post orgasm, it is over-stimulating to the point of being almost painful. Definitely fun to try but it will not be a regular use sleeve for me.
The densely packed bumps mean that this sleeve needs to be carefully cleaned to remove any leftover lube. Fast running water, run through both ends of the sleeve, should suffice. You could also fill the sleeve with clean water, covering the ends with your fingers, and swish it around to remove any stubborn residue. Dry in a warm spot (never directly on top of a radiator) for several hours before putting your Fleshlight away.
How I rate Fleshlights explained
This Fleshlight is made to overstimulate: ideal if you want to learn control and improve your sexual staying power but less so if you are looking for a fun masturbation sleeve for regular use.
What comes to training your sexual stamina, STU works but it’s also a kind of marketing gimmick as any Fleshlight masturbator will improve your stamina if you’re able to stay in control and stop when getting too close to ejaculation (see my recommendations for the best stamina training Fleshlights).
If you love the Stamina Training Unit then why not try one of the following?
- Jenna Haze Obsession: This is another very, very intense sleeve; ideal for those who like some extra stimulation.
- The Speed Bump sleeve is, like the STU, filled with small bumps which stimulate from all sides. The Speed Bump is available as a sleeve-only and Build Your Own Fleshlight options.
- Fleshlight has several masturbation sleeves which use bumps extensively. If you like bumps, read also reviews for Romi Rain Storm, Riley Steel Nipple Alley, Freaks Alien, Nina Hartley Cougar, and Flight Instructor.
- Nicole Aniston’s Fit is another texture that is designed to help increase sexual stamina. I found the Fit to be a somewhat less intense and more enjoyable than STU.
Find out what are the top intense Fleshlight textures in the Complete Guide to Fleshlights.
Disclosure: Please note that some of the links above are affiliate links, and at no additional cost to you, I will earn a commission if you decide to make a purchase. If you click an affiliate link and make a purchase, you help support this website. Please note that: 1) I do not and will not recommend a product just because I’m an affiliate. 2) I do not recommend products just for the sake of making money. 3) I recommend products because I think they are valuable to my readers. 4) I respect and value my readers too much to write anything other than my own genuine and objective opinions and advice.