Guides

Four folded Kokoruno underwear pairs on a wooden table, with black waistbands and embroidered logos.
Modal vs Bamboo Underwear: What Matters in Hot, Humid Weather?
Modal or bamboo-derived viscose? Compare the actual blend, fabric, fit and care before choosing an everyday pair for humid weather. Read more...
Man wearing close-fitting modal underwear on the thigh
Boxer Brief vs Trunk: Which Inseam Should You Wear?
A trunk is a shorter boxer brief. Compare Kokoruno’s 3-inch Booie Trunk and 6-inch Booie Boxer — same modal knit, different inseam — and pick the cut that stays put... Read more...
Man wearing boxer briefs that sit on the thigh
How Should Boxer Briefs Fit?
Boxer briefs should sit close without restricting. How the waistband, pouch, legs and inseam should feel — and why the product size chart is the measurement to use. Read more...
Booie Boxer underwear laying on a table
How Many Pairs of Underwear Should a Man Own?
Most men need 10 to 14 pairs of everyday underwear. Here is a simple way to calculate your ideal rotation, spot worn-out pairs and rebuild your drawer without buying more... Read more...
Guy wearing wine colored Booie Boxer
Why Do Boxer Briefs Ride Up? And How to Stop It
If your boxer briefs constantly ride up, it usually isn't something you just have to live with. Ride-up is most often caused by a combination of fit, fabric, leg length... Read more...
Guy wearing Booie Boxer underwear and Zora Crew socks
Best Men's Underwear for Hot and Humid Weather
In hot and humid weather, the wrong underwear quickly becomes impossible to ignore. Here is what actually matters when choosing a pair that stays comfortable from morning to night. Read more...
Close-up of TENCEL Modal knit used in underwear
What Is Modal Fabric? And Why It Works in Underwear
Modal is a beech-wood fibre that feels smoother than most cotton and holds less damp weight. How it is made, how it compares, and how to wash it. Read more...
Closeup of modal fabric
How to Wash Modal Underwear
Modal underwear can go in the washing machine. Use cold water, a mild detergent, and skip fabric softener. How to wash and dry it without flattening the stretch. Read more...