Smartwool Classic Thermal Merino Quarter-Zip Base Layer Top - Men's Color: North Woods Heather Excellent condition Heavyweight merino wool, the men's Smartwool Classic Thermal Merino 1/4 zip top helps regulates your temperature during high-intensity skiing, hiking, running and more in cold weather. -Interlock-knit merino wool fabric enhances comfort, breathability and thermoregulation while naturally resisting odor buildup -Shoulder panels -Flatlock seam construction -10 in. 1/4 front zipper