Smartwool updated the fit of our Men's Classic Thermal Merino Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of our heaviest base layer tops and best base layers for cold weather, this garment uses 100% responsibly sourced Merino wool, shoulder panels, and a flatlock seam construction to help minimize chafing as well as help keep you comfortable and temperature regulated as you enjoy high-intensity skiing, hiking, running, and more.

• Machine Wash Warm Gentle Cycle.
• Do Not Iron Decorations.
• Do Not Bleach
• Tumble Dry Low
• Cool Iron As Needed
• Do Not Dry Clean
• Wash With Like Colors