SHEATH 2.1 Men's Dual Pouch Trunks $31
  • Comfort
  • Materials
  • Pouch
  • Cooling
  • Fit


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The Sheath Dual Pouch system has been reviewed here before. Today I’m taking a look at the 2.1 Men’s Dual Pouch Trunks in size small. In another review I tried out the same pair in mediums but was unhappy with the fabric fit.

Directly from the Sheath website: We here at SHEATH Underwear have created our products with the active person in mind. If you are an individual who regularly involves themselves in physical activity, such as mountain climbing, martial arts, sports, running, cycling, yoga, meditation, et cetera, then you need SHEATH in your drawer. Although our apparel boasts innovative comfort and functionality advancements, we pride ourselves on maintaining a traditional sense of style in our designs, making the SHEATH brand easily adoptable for anyone.

The most well-known feature of the Sheath brand seems to be the dual pouch feature with a support pouch for your balls and separate “urination hole” for the penis with a flap of fabric keeping it off the boys.


Sheath offers the dual pouch in briefs, trunks, and boxer briefs. The 2.1 Trunks featured today have a 1.5in inseam and come in black, gray, blue, green, and camo. I ordered the black and gray. The black is your classic all black with the sheath logo on the front center of the black waistband. They gray is identical with no outstanding features. I would say the black and gray appear boring next to the more vibrant blue and green.



These underwear are fitted, but bordering on compression. I previously tried out a medium (my normal size) and found them to be too loose in the leg and the fabric shape distorted too easily. This size small pair feels much closer to what I’m used to. After several hours I’m starting to feel a little cramped in them. The pressure from the o-ring on the underside of my penis is a little uncomfortable. The top of the butt keeps threatening to sit too low when I bend over.



These are made with 92% modal and 8% elastane. The seams are well made with no obvious faults. The tag and care instructions are printed onto the back so there is no itchy tag to deal with or remove. The material is very light and thin and stretches easily.


Our Views:

​If you saw my original review of the medium size you know that I really like the dual pouch, but my overall satisfaction with the fabric was low. The company sent me replacements in size small, no questions asked. I was eager to try them out and see how they compared. Getting everything placed properly in the two pouches was fairly straightforward and was definitely easier if I was a little excited. The fabric flap covering your penis is very thin and showed a lot of detail of my member. It’s not a big deal but not something I would want at the gym. I wore them through the day and several times noticed the pulling/lifting of the interior pouch on my package but it wasn’t unpleasant.

Going to bed and no longer having pants on over them quickly showed me that even a slight erection would direct my penis out of the vertical fly and completely expose him. It wasn’t a huge deal, but occurred again with morning wood. Once flaccid he would reposition in the proper place. Throughout the day I would feel him pop out randomly. Again, this isn’t a major problem, but could be bad if wearing thin pants in a public setting. There were a few times that erect I did not pop out and felt that the pouch was not large enough to allow expansion. Even flaccid the vertical fly would sit open enough for a fully exposed side view. I also noticed that no matter how much I shook him off after urinating there was a very prominent and visible wet spot in the fabric after putting him away. The coloring of the gray pair made this even worse than the black.

By the end the first whole day I realized that I had not once had to subtly reposition myself or perform the awkward leg stretch to pull my sack off of my thighs. Everything stayed put , but they did chafe the underside of my penis and the inside of my thighs where the sides of the ball support fabric rubbed. Several times when bending forward or squatting there was obvious pouch support. At first it felt odd, but then I realized that I wasn’t getting the normal squeeze on my balls from my thighs. Compared to the mediums, these smalls felt like they were perhaps holding my balls too tight and became uncomfortable.

My biggest complaint after a whole day with my new size is feeling too tight. The mediums had the opposite problem so I’m not sure if they’re going to work long term. Perhaps a different fabric in the larger size will fit the way I hope.

Other thoughts
I’ve seen in some of the other Sheath reviews that the pouch may not have room for a more endowed individual, especially during an erection. I am pretty average flaccid and erect and had no issues in the medium, but was definitely constrained in the small when erect. I did put my whole package through the o-ring for several hours on day one. It was definitely too tight in this pair.

When wearing sweatpants or scrub pants the head of my penis was sometimes clearly outlined. I blame this on the outward lift of the pouch design paired with thin, stretchy fabric. I don’t think it ever drew attention and maybe that’s an effect you’re going for. In general I would prefer a less detailed bulge.


Will I buy another one? No. I have to say that I overall like the design and really like the dual pouch. I want to try a pair with a different fabric to see if it maintains it shape better. Maybe this pair will stretch with some more wears and washes. I’m also trying out Separatec to compare and will update with my thoughts.


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Tommy L

Thanks for the review, Lawrence. These seem like great basics and I really like it that there aren’t words all over the wasteband. I like the simplicity of the design. The O ring looks a bit tight on you. The pic with you to the side in an excited state makes me wonder how the O right itself responds to hard ons. Is it also moved to the right side in that pic with the force of your boner? Is that uncomfortable at the base of your shaft? I would love to see inside of there to see what’s going on. Thanks for reviewing!

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