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Quantity
1
(Patent Pending)
Our flagship men's underwear and most popular design to date, the SHEATH 4.0 Boxer Brief seamlessly blends comfort and function with its innovative dual pouch design, providing both a flattering fit and luxurious separati...
Reviews
4.8
1.3K ratings
5
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1
Awesome product
The fabric is extremely soft and comfortable. The pouch system is a life changer. I can never go back to non pouch style underwear. My waist is 35” which is in between sizes so I ordered a medium and large. Both actually fit very well. The medium is tighter/more compressive on my thighs and the large is loose but not baggy.
R
Ryan · May 24, 2026
Great fit and fabric quality
I honestly didn’t expect to like these this much. The pouch design actually makes a huge difference in comfort and support throughout the day, especially if you’re active or sitting for long hours. The modal fabric feels super soft and breathable, and they stay in place without riding up. Definitely one of the most comfortable boxer briefs I’ve owned. I highly recommend them!
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Juan · May 7, 2026
My package delivers!
I love these, by far the workhorse of their line. Keeps the chaffing away and sweatiness to a minimum. I have tried other brands, and no one has the design that SHEATH has! I love them!