Smartwool Active Long Sleeve – Women's Size:S Built for high-mileage road runners

Built for high-mileage road runners who refuse to choose between cushion and stability

Synthetic insulation holds core warmth even when wet

and anyone who takes UV exposure seriously

Works standalone in mild temps or as a base layer under a shell when conditions get serious

Merino wool construction naturally regulates temperature and wicks moisture — no synthetics needed

Smartwool Active Long Sleeve – Women's Size:S Built for high-mileage road runnersFor high output trail days and gym sessions where you need a top that pulls its weight, the Active Long Sleeve is our go to merino pick for women who run hot and work hard. A merino wool blend regulates temperature naturally and kills odor without synthetic buildup, while the stretchy, lightweight construction stays out of your way when the pace picks up. Merino wool blend naturally regulates body temperature and wicks moisture no synthetic smell