Smartwool SW016355 M's Classic Thermal Merino Base Layer 1/4 Zip COLOR:BKCS this supportive rubber sole lace-up

this supportive rubber sole lace-up is an everyday go-to

300D recycled polyester with phthalate-free PVC laminate

We've cut weight and streamlined our Innox GTX Mid design

Flexform waistband technology

• Raglan sleeves for mobility

Smartwool SW016355 M's Classic Thermal Merino Base Layer 1/4 Zip COLOR:BKCS this supportive rubber sole lace-upWe'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,