Smartwool Active Boxer Brief 2-Pack – Men's size-10 It stuffs into its own

It stuffs into its own chest pocket so you'll never leave it behind

Heavyweight sweater-knit fabric with a classic texture that looks as good off the trail as on it

Quilted insulation paired with 2-way stretch panels means you stay warm and mobile

and lower back after hard efforts

Smartwool Active Boxer Brief 2-Pack – Men's size-10 It stuffs into its ownFor 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