Luckily, you layered the SmartWool Men's NTS Midweight Zip Top under your waterproof shell before hitting the slopes this morning, especially considering the twenty minute lift-hold you endured in frigid, single-digit temps. This midweight baselayer features cozy merino wool for high levels of heat-trapping warmth and moisture-wicking comfort. Moreover, the seamless shoulders and flatlock body seams eliminate the scratchy, irritating feel common with many wool baselayers.