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SHEATH 3.21 Men's Boxer Briefs combine a perfect 5-inch inseam with a patented dual pouch system crafted from a breathable, moisture-wicking modal-spandex blend. Designed for active professionals, these boxer briefs deliver superior support, comfort, and durability, ensuring all-day freshness and a sleek fit that resists ride-up and irritation.











| ASIN | B01ND0UMHB |
| Additional Features | Elastic Band |
| Age Range Description | Adult |
| Best Sellers Rank | #115,779 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #387 in Men's Boxer Briefs |
| Bottom Style | Boxer Briefs |
| Brand Name | SHEATH |
| Care instructions | Machine Wash |
| Collection Name | All |
| Color | Black |
| Customer Reviews | 4.4 out of 5 stars 958 Reviews |
| Fabric Type | Modal |
| Fabric type | Modal |
| Fit Type | Standard |
| Global Trade Identification Number | 00855687005875 |
| Item Type Name | Boxer Briefs |
| Item Weight | 3 Ounces |
| Manufacturer Part Number | 3.21 |
| Material Type | Modal |
| Number of Items | 1 |
| Origin | Made in the USA and Imported |
| Pattern | Solid |
| Product Care Instructions | Machine Wash |
| Rise Style | Mid |
| Size | Small |
| Sport Type | Multi-Sport |
| Style Name | Modern/Fitted |
| Style Number | 3.21 |
| Subject Character | UFC |
| Theme | Sports |
| UPC | 855687005875 |
| Unit Count | 1 Count |
P**D
Thank God for these!
I was hesitant to order these, as I've read many people complain online about similar products by other brands, and how they don't hold your junk in place very well. After further pondering, and many instances of getting frustrated while walking and/or jogging around, and having to stop every so often to reach my hand down my pants, and pull my junk out from in between my legs, I decided to give them a try. I couldn't be happier. They are so comfortable, and they actually perform as they claim. My junk stays comfortably in the pouch, and my hot dog stays in it's separate hole, even working it's way through on it's own when I forget to do it manually. These are a little more revealing during times of crisis (think frozen hot dog, aka: stiffy), but as long as your pants fit, I wouldn't worry. Might be a different story when wearing loose shorts to the gym or something. The only time I have noticed these not keeping my junk in the pouch is when performing any type of deep squatting movement. If I am doing squats, deep seated leg press, or anything like that where I have to bring my knees up close to my body, the jewels do fall out of the bag, but besides those instances, these are fantastic. I primarily bought them for days when I am doing a lot of walking, jogging, standing, etc., and they are perfect for that. I've already purchased a second pair, and plan to get more down the road.
B**Y
Most comfortable underwear ever!
I never do product reviews, but i have to on this one. These underwear are amazing. They are soft and very stretchy so they comfortably conform to your body. Absolutely no wedgies even when exercising. The way the pockets cradle your junk is great. Keeps the twig and berries in front of you, no more in between your thighs. Added benefit is you get a rather impressive bulge to let people know their os something doen there. My girl said they are so hot 🔥 Good confidence booster. Also no more sticki g together or to your leg. Not enough good things to say about these. I am throwing away all my other underwear and buying a buch of these. Also, if you are in between sizes even a little bit go a size down. I always wore a medium but i got smalls on these and i am glad i did. They stretch so much that the small is perfect for me.
N**L
The berries are comfortable but the twig is cold
Good quality product. I like having my nether bits nested in a pouch of their own. The material is nice, soft and breaths well. My only complaint is when your twig is separated from your body and your berries, it tends to get a wee bit chilly. I found myself ignoring the twig hole and just tucking him in with the berries to stay warm.
C**S
I must say I like it
The size guide is accurate and they’re very comfortable
B**Z
Everything as advertised
however being a Small size the boxers fit as intented but the waistband is a little bit loose not cosidering myself much skinny of a guy but not a gamechanger for this model of underwear Turns out the soft pressure waistband feels even fresher when youre are sitting
T**7
Wanted to try out something new
Just trying out new things. I ordered some of these and can’t complain out the fit or the fabric. Both fit and fabric are great. Nice and soft and fits as expected. However, the overall design of this isn’t anything that I could imagine working for its intended purpose. Not only that but the pouch is somewhat of an awkward design. Also, if you have a bit more to go in the outer/front pocket then your going to have a hard time keeping your guy in there since there’s an opening to the right side of that pocket. They should have made it a horizontal fly instead of a side fly. Anyhow, the only other thing I didn’t care for is that they shipped me a color that’s different than what was shown. So, there’s that to expect I guess.
J**M
Satisfied
Happy
N**E
Comfortable, worth it
I live in a hot climate and it’s so comfortable, it hugs your body and it’s breathable, worth the money.
D**L
Very very comfortable
Loved the fit of the underwear and the the feeling of good separation and sweat control after a very physical 8 hour shift
J**S
Sólo buen diseño
Buen diseño. Pero ... soy talla 30 , compre talla chica supuestamente para cinturas de 28 a 30... Y el boxers me quedo algo flojo.. no hace fit en mi. Antes de que me llegará el producto intenté contactarme con el vendedor dos veces , por medio de la app y por medio de servicio al cliente de amazon y en ni uno de los casos contestó. El producto hubiera sido excelente si tubieran los tamaños adecuados a las medidas que dice el boxer u ordenadas.
D**H
They work.
I saw these on a sponsor ad section on a couple of Youtube videos (one of Simon Whistler's many channels) and half-remembered it afterwards. I thought it sounded like a gimmick for selling overpriced underwear. I work some long shifts in a fairly hot environment, which gets uncomfortable. Trips to the toilet to unpeel my scrotum from my thigh and wipe the sweat off. Itchy. Not ideal. So I thought I'd give these a try, despite expecting them to be gimmicky nonsense. They're not gimmicky nonsense. They work as described. Good support (which I appreciate more as I get older and saggier) and no more sweaty scrotum. The only drawback is the price. I'd like a dozen pairs, but I balk at spending £300+ on underpants.
A**W
Worth Every Penny!
So pleased with these, I now have 11 pairs. Well worth the investment, and standing up well to wear and washing.
R**Y
Keeps everything seperated
Keeps each part seperate in its own compartment, resulting in no sweat build up at the creases, and eliminating the chance of chafing.
Trustpilot
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