More room where it matters. A flattering fit everywhere else.
“Absolutely in love with these” — Looks and feels great
“The fit, comfort and style are unmatched. The colors are as vibrant in person and they feel better than wearing nothing.”
★★★★★
CJ
The Little Details Make The Difference
95% Bamboo and 5% Spandex
↔Fits true to size.
✦Naturally fights odor
✂No itchy tags.
♡Gentle on sensitive skin.
≈5× More breathable.
99-Day Fit Guarantee.
Not sure about your size?
Try with confidence
99Days
99-Day Perfect Fit Guarantee
Our underwear fits true to size, but we know sizing isn't always straightforward. If you're somewhere between a small and medium (a schmedium, if you will), order with confidence. Try on one pair and keep the rest sealed. If the fit isn't right, we'll exchange your order for free within 99 days.
Join over 70,000 customers.
Shipped from Denver, Colorado
★★★★★
Rated 4.8/5 based on +1500 Reviews
Fantastic Fit!
"Kumori briefs are always amazing. Second time ordering and always happy with my colors!"
— Andrew H
★★★★★
"I've purchased the same brand of underwear for the last 3 years and haven't found anything else that's worth switching too until now."
Mario V.Verified Customer
★★★★★
"I saw multiple ads on both Instagram and TikTok and thought 'here we go again, another generic underwear brand' but mannnnnnnnn was I wrong!"
Edwin R.Verified Customer
★★★★★
"I loved the feel, and the support the box briefs offered. After ordering my first pair, I ordered an additional 4 pair"
Matthew W.Verified Customer
★★★★★
"They're lightweight, breathable, supportive without feeling tight, and somehow they're both really comfortable and sexy."
Eli C.Verified Customer
The Kumori Buying Difference
We don't think you should have to choose between cheap underwear that falls short and expensive underwear that's just decent.
At Kumori, our goal is simple: make the best-looking, best-fitting underwear we can and sell it at a reasonable price.
How do we do it? We sell in bulk packs, and we count on making customers happy enough to come back. We'd rather earn your loyalty than charge you a fortune for one pair.
Come see why over 70,000 men have made the switch to Kumori.
Machine wash cold and hang dry to keep your briefs looking and feeling their best for years to come.
In a rush? No worries. You can machine wash and tumble dry on low, too. Just avoid high heat to help preserve the fabric.
Free shipping on all orders over $75.
Every order ships from our warehouse in Denver, Colorado, and typically arrives within 3–6 days.
Our briefs fit true to size, but we know sizing isn't always that simple. Somewhere between a small and a medium? A schmedium, if you will.
Order with confidence. Try on one pair and keep the rest sealed. If the fit isn't right, we'll exchange your entire order for free within 99 days.
Because underwear is an intimate product, we don't accept returns for refunds. However, size exchanges are completely free under our 99-Day Perfect Fit Guarantee.
