Tops

The updated fit of the Men's Classic Thermal Merino Base Layer 1/4 Zip improves functionality while also enhancing aesthetics. It will help keep you comfortable and temperature regulated as you enjoy high-intensity skiing, hiking, running, and more.

Meet the improved Men's Classic Thermal Merino Base Layer Crew. Shoulder panels eliminate top shoulder seams and a flatlock seam construction helps prevent chafing. Add one of the best base layers to your wardrobe and experience the difference.

Smartwool has updated the fit of their Men's Classic Thermal Merino Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics.