The Original Performance Underwear that made everything else obsolete; the Boys's 0 Series Printed Boxer Jock 4 in have you covered for daily activities, hiking, working out, and competing. nice with jeans, shorts, or sweats, and the O Series keeps you cool on the hot days and warm on the...

A great active wear boxer, the Under Armour M series Boxer Jock 3 for men moves with you on your active endeavors and with lightweight fabrics has an accelerated dry time. The flat lock seams feel smooth against the skin and helps eliminate chafing. The anti-odor technology keeps you nice...

A great active wear boxer, the Under Armour M series Boxer Jock 6 for men moves with you on your active endeavors and with lightweight fabrics has an accelerated dry time. The flat lock seams feel smooth against the skin and helps eliminate chafing. The anti-odor technology keeps you nice...

Forget your old underwear that bunches up, wears out, or loses its shape, the Under Armour Boys's O Series Boxer Short stretches, recovers, and fits exactly how you want it to. Offering anti-odor technology and strategic venting, this performance underwear will keep you cool and dry no matter how hard...

Your trip just got more nice. These Boys's Give-N-Go Brief from Ex Officio have built-in features to keep you dry and New, even if your flight flies over more than one sunset. ExOfficio clothing field-tested and approved by the African Wildlife Foundation.

For unbelievable next to skin comfort, pull on the Icebreaker Brief for Boys. Made from 100% merino wool, the Brief is naturally moisture wicking, breathable, and odor resistant, providing all day comfort where it really counts.

Keep it brief, you say? Full-cut for comfort, the highly breathable, featherweight Active Briefs keep you dry while providing a measure of Strength during cool-weather activities. The soft, quick-drying waistband won't chafe or snag on overlayers, and the nonrestrictive elasticized legs have rolled-out seams for next-to-skin softness. With a contoured...

These superbreathable no-fly briefs are the minimalist's choice for high-octane endeavors. Now made from fast-wicking, quick-drying 93% polyester (71% recycled) that offers both stretch mesh (for Strength) and open mesh (for cooling airflow); with 7% spandex. Soft edging at the leg openings and the seamless waist won't roll or create...