Smartwool Thermal Merino Quarter-Zip Base Layer Top small Condition: excellent Color: gray Great for high-intensity activities like skiing, hiking and running, the women's Smartwool Classic Thermal Merino Quarter-Zip base layer top is made for cold-weather comfort when you're on the move. One of the heaviest base layer tops from Smartwool, ideal for cold weather Updated fit for improved functionality and enhanced aesthetics Smartwool slim fit is intended to follow the contours of the body 100% merino wool fabric for comfort, breathability, thermoregulation and odor resistance is constructed using an interlocking knit 100% responsibly sourced merino wool Flatlock seam construction designed to help increase comfort and minimize chafing Back body seam wraps to front Raglan sleeves Size medium center-front zipper: 8 in. (20 cm) REI, camping, hiking, skiing, running