Excellent
"Great athletic boxers, fabric wicks moisture, seams are smooth and the fit is so comfortable. Still prefer the icon for everyday but for sports these are really excellent."
Click to zoom
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: 4.8809524 / 5 from 42 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%): Many customers stated that the underwear is great and the best on the market, making it the most common opinion.
- Fabric Quality (16%): A significant number of customers appreciated the material, describing it as great, soft, and breathable.
Review topics: ["fit","fabric","material","underwear","style","weight","feel","boxers","comfort","seams","sweat","pouch","briefs","icon"].
Review highlights
- "The material is light weight and breathable." —
- "The material is really soft and fits nicely." —
- "Good material and comfort" —
Reviews
Lovin the Pro Ultra Boxer Briefs
"Although I just purchased the briefs a few weeks ago, they are super comfortable and are wearing well. The pouch is a game changer. I am 6’1” 195 and the large fits perfectly."
Maybe Best Ever
"The BN3TH may be the best men's underwear I've ever owned. I say maybe because they are super soft and live up to the anti-order claim so they're great when travelling. That said, I still like the classic icons and the pro flex, too. The icons are probably the softest, and the pro ultra the smoothest, if that makes sense. But overall, it's tough to find any fault with the pro ultras."
"I've tried a few brands of premium men's underpants and so far, I'd say these have the best fit and comfort. Build quality is excellent. I'll probably replace many of my Saxx pairs with these."
Best Style Yet
"These are my very favourite boxers for wearing anytime. Great in hot weather, and I just find them really comfortable for regular daytime underwear. They hug your body and "stay put" even when you pull on your bluejeans."
Perfect
"These Pro Ultra briefs (slste grey)fit great and feel amazingly soft. Another great product from Bn3th."
Good product
"This is my third order. The underwear and cycling liners are very good."
I Enjoy. No complaints at
"I Enjoy. No complaints at all"
Great fit, love them. Long
"Great fit, love them. Long time customer."
Great fit and comfortable
"Great fit and comfortable"