Excellent
"They are sooo comfortable while also being functional. I will definitely be ordering more."
Click to zoom
Overland Trek
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-odor 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.
We offer a 30-day return window for all purchases made directly through our website. To submit a return request, please use our online portal: returns.bn3th.com.
For more information, check out our Frequently Asked Questions page.
ENGINEERED COMFORT
WHY WE MADE THIS
SUSTAINABILITY MATTERS
Overall rating: 4.6153846 / 5 from 26 reviews.
AI Generated Review Summary
Summary topics
Review topics: [fit, material, style, support, pouch, seam, underwear, waistband, brand].
Review highlights
Reviews
Pouch isn’t as advertised
"The product itself is good and comfortable and made well, but the pouch isn’t as advertised. it doesn’t do a great job of keeping everything in the pouch. It can fall out very easily. Also it says that it “lifts and supports”. it does neither of those and the only thing the pouch does is seperate the genitalia from the legs. just extraction. doesn’t lift though"
"These are the best ones if you were wondering"
Super Soft and Very comfortable.
"By far, the softest, most comfortable pair of active underwear on the market. There is a noticeable difference between the Pro Flex and Pro Ultra. Pro Flex is great for the gym and active sports. However, I could rock the ultras anywhere and that is what makes it priceless."
The product was fine. My
"The product was fine. My complaint is that if someone pays extra for fast shipping be up front and tell the customer if its going to take a week before you even get it in the mail. Now when I complain about it you ghost me. ."
Outstanding Underwear for Comfort, Support & Sweat Control
"These sports underwear deliver exactly what you need for intense workouts: excellent support, all-day comfort, and superior moisture-wicking. The fit is snug and supportive without being restrictive—no shifting or adjusting mid-workout. The soft, stretchy fabric and flat seams prevent chafing, while the wide waistband stays put. Best of all, the moisture-wicking fabric keeps you dry even during heavy sweat sessions. Verdict: Comfortable, supportive, and sweat-fighting—ideal for anyone serious about training."
"They are fantastic! Really good quality. I only wear this brand now!"
So comfy, you don't know you're wearing them
"I’ve been a devoted BN3TH fan since the original brand name. The new styles just keep building on the quality and comfort. Wouldn’t wear anything else, or less! :)"
Go gray
"I live in the gray. Best undies ever."
"Nice fibers and soft. I like it to do exercise."