Smartwool Classic Thermal Merino long sleeve base layer

Meet your first line of defense against the cold. The SMARTWOOL Merino 250 Crew is the ultimate base layer, engineered from 100% Merino wool for unparalleled warmth and next-to-skin comfort. This versatile shirt intelligently regulates your temperature by wicking moisture to keep you dry and warm, while remaining breathable and naturally odor-resistant. Its active fit, chafe-free flatlock seams, and shoulder panels ensure complete freedom of movement, making it the perfect foundation for any cold-weather adventure, from the slopes to the city