Smartwool Active Boxer Brief 2-Pack – Men's color-orange plus reflective details add visibility

plus reflective details add visibility at dawn and dusk

Standard FootShape toe box lets your toes splay naturally — especially welcome on longer runs when feet tend to swell

81% polyester / 11% lyocell / 8% spandex blend is ultra-light

from low-profile neutrals to high-vis options

Smartwool Active Boxer Brief 2-Pack – Men's color-orange plus reflective details add visibilityFor runners, hikers, and active guys who wear the same base layer from trail to travel, the Active Boxer Brief 2 Pack is our pick for daily performance underwear. Merino wool blend fabric regulates temperature and fights odor naturally, while flatlock seams eliminate the chafing that synthetic underwear causes on long days out. Merino wool blend wicks moisture and resists odor without chemical treatments stays fresh through back to back days of hard