Smartwool's best selling, and warmest, baselayer, just got a little more refined with an improved fit, chafe-free seam construction and panels that offer more comfort with a pack.
Shoulder panels help eliminate top shoulder seams
Flatlock seam construction designed to help eliminate chafing
Fit: Form Fit
Interlock knit, UPF 50+
10" (25cm) center front zip with semi-locking logo slider
Fabric: 100% Merino Wool