Smartwool SW016355 M's Classic Thermal Merino Base Layer 1/4 Zip COLOR:BKCS Our Comfort Shell fabric helps

Our Comfort Shell fabric helps you stay warm and comfortable while on the move in cold weather

which acts as the final barrier between you and the weather

so go ahead and choose your own adventure

• Raglan sleeves for mobility

Smartwool SW016355 M's Classic Thermal Merino Base Layer 1/4 Zip COLOR:BKCS Our Comfort Shell fabric helpsWe've 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,