Smartwool NTS Mid 250 Pattern Zip Top

If you do lots of running in chilly temperatures or just need a midweight baselayer for tearing up the slopes, the Smartwool Merino 250 Pattern 1/4-Zip Baselayer is a winner. Made of 100% merino wool, which is renowned for it's temperature-regulating, odor-controlling, and moisture-transferring capabilities, the Mid 250 has a 1/4-length zip to help you warm up or cool down. It also sports flatlock seams for chafe-free comfort.