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Fleshjack Endurance Jack Review

Review: Fleshjack Endurance Jack Stamina Texture

The Fleshjack Endurance Jack (or Stamina Training Unit) is specially designed to enhance your sexual prowess through honing your ability to prolong ejaculation. The diameter of the canal of the Endurance Jack is a relatively tight 0.45-0.6 inches (or 12-15 mm). Numerous large bumps cover the inner surface, protruding deep into the canal. The bumps are located quite close to each other, creating a very dense texture that extends throughout the entire length of the canal.

The Stamina Training texture is available only combined with the Fleshjack Endurance Jack Ass and the Pure orifice.

The exceptional density of the bump texture creates highly intense stimulation on the dick. This strong stimulation sensation is brought about by the bumps as they massage and caress the penis shaft, head and rim from all directions. The penis, at the same time, is tightly grasped by the long-stemmed bumps as it makes its way through the "forest of dense bumps". All of this is culminated by a powerful suction effect that enhances the wonderfully enjoyable stimulation.

When moving forward and back in the canal, the intensity of the stimulation leads you to a powerful orgasm in a relatively short amount of time. In order to postpone cumming, you will need to pause or at least vary the thrusting speed. This in fact is the very skill you can improve by training with the Endurance Jack: It is the ability to control your sexual arousal and your "ejaculation threshold" that is key for enhancing your sexual stamina.

After a couple Endurance Jack sessions, you will quickly realize a lot about your sexual self and body, how you react personally and the degree of stimulation you can bear at what time. Once you are able to put off cumming in the Endurance Jack for longer periods of time, premature ejaculation won't be much a problem during actual sex and you'll be able to prolong the enjoyment of the guy you're having sex with.

Clean-up of the Endurance Jack is relatively time-consuming because you need to clean out the comparatively large amount of sperm and lube residues that build up between the closely arranged bumps. In order to completely clean the inner canal, it is best to briefly turn the Stamina insert inside out. Similarly, the drying of the inner canal takes a little longer than average, which can be shortened by wiping off with paper towels.


The texture of the Endurance Jack offers one of the most highly intense stimulation experiences of all Fleshjacks, which is exactly why it is ideal for enhancing your sexual prowess. After regular training with the Endurance Jack, any previous problems with premature ejaculation become history. I would especially recommend the Fleshjack Endurance Jack for circumcised guys, whose dick head is not as sensitive as uncut guys - after all, stronger intensity than inside the Stamina texture is nearly impossible!


Intensity 10/10 Realism 5/10
Stimulation 9/10 Suction 8/10
Variation 7/10 Lube Use 6/10
Penetration 8/10 Cleanup 6/10
Tightness 7/10 Dry Time 6/10
Overall Rating