Smartwool Intraknit Active Base Layer Crew – Women's button-down 4 Degree Elite Fit System

4 Degree Elite Fit System holds the sock firmly in place inside hiking boots — no bunching

Versatile enough for low-impact runs

Perfect for camp hangs

while TruTouch fingertips let you handle your phone without peeling them off

Smartwool Intraknit Active Base Layer Crew – Women's button-down 4 Degree Elite Fit SystemBuilt for high output cold weather efforts on the trail or in the mountains, the Intraknit Active Crew is our top merino base layer pick for women who run or move hard in the cold. Body mapped Intraknit construction puts stretch and ventilation exactly where you need it, so you stay regulated without overheating under a shell. Merino's natural odor resistance makes it a reliable choice for multi day adventures. Body mapped Intraknit zones deliver