Great boxers.
"These boxers are the best of the best for high function underwear. No riding up, great comfort and no odour."
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Nautical Blue
The award-winning Pro Ultra is designed for max intensity and elite performance with super premium, lightweight fabric that is highly breathable, supportive, and silky smooth. These Boxer Briefs feature The Original 3D Pouch to ensure everything is separated and supported so you can always put your best foot forward.
The fabric is a breathable, moisture-wicking polyester blend mesh featuring Ionic+® anti-odour technology that does not wash out.
Fabric: 84% Recycled Polyester, 16% Spandex
Free standard shipping is available on all orders above $75 (after discounts and before taxes).
All available shipping options will be visible at checkout. We ship orders within 1-2 business days, but this can increase during promotional periods.
For more information, check out our Frequently Asked Questions page.
ENGINEERED COMFORT
WHY WE MADE THIS
SUSTAINABILITY MATTERS
Overall rating: 4.84375 / 5 from 32 reviews.
AI Generated Review Summary
The Pro Ultra Boxer Brief in Nautical Blue is highly regarded for its exceptional material and design. Customers praise its breathable, moisture-wicking fabric and the supportive 3D Pouch, making it a top choice for those seeking comfort and performance.
Summary topics
- Support and Separation: 24%
- Fabric Quality: 16%
Review topics: [].
Review highlights
- "The material is light weight and breathable." —
- "The material is really soft and fits nicely." —
- "Good material and comfort" —
Reviews
Highly satisfied
"The pouch allows enough volume/space, that's great!"
Best workout underwear
"The material is light weight and breathable. Their biggest advantage in my mind is that they keep you dry. They are pricey but highly recommend."
Excellent underwear except for a nitpick details
"I really like the bn3th fabric. I have a few classic icon, some pro agua X and I wanted to try the Pro Ultra. They feel great. I was really surprised by the pouch seam that was on the outside. It was not visible on picture on the site. However, since its an underwear, not a lot of person would see that outward seam. Overall, I do prefer the 'secure' feel of the pro or pro agua over classic, but in the end, I still prefer the texture and confort of Pro Agua X over the Pro ultra."
Pro Ultra Mystery
"I ordered a bunch of mystery pairs and they were a great deal and arrived quickly. Very soft and comfortable fabric!"
Best underwear I have had
"I have had a dozen different brands of underwear over the past 2 years, including the other nut-flap manufacturer, and BN3TH are the best for me. These Pro Ultra boxer briefs like the Pro Flex do fit very snugly, I am 36" waist and the L (36-38) made me check that they didn't ship M by mistake. They are almost like compression undies, but at the end of the day after a 10km walk golfing a round, they still are snug on my legs wicking sweat away from the nethers, and the pouch layer between thigh and scrotum prevents chaffing. Keep making underwear this good and I will be a customer for life."
High quality for comfort and
"High quality for comfort and function"
Perfect
"These are perfect fit and stay snug throughout any activity"
Great underwear!
"The fit is perfect and they're super comfortable!!"
Pro Ultra Boxer
"Happy with the product"