Intraknit All-Season Merino Base Layer Crew – Women's

Built for active women who need a base layer that works from cool mountain mornings to sweaty Southern climbs, the Intraknit All-Season Crew is our top pick for year-round layering. Smartwool's Intraknit construction places mesh ventilation exactly where you run hot, so airflow and moisture management happen without bulk. Merino wool keeps odor in check on multi-day efforts — no mid-trip laundry required.

• Intraknit technology zones strategic mesh panels directly over high-heat areas for targeted airflow during hard efforts
• Merino wool blend regulates temperature, wicks moisture, and naturally resists odor through extended wear
• Seamless construction in high-contact zones eliminates chafing under a pack or during long runs and hikes
• All-season weight works as a standalone layer in mild conditions or a next-to-skin base when temperatures drop
• Women-specific, body-mapped fit moves with you without bunching or riding up — available in Black, Deep Navy, Dusty Teal, and Purple Storm