SmartWool Merino 250 Baselayer Crew. Smartwool's best selling and warmest base layer just got a little more refined with an improved fit, chafe-free seam construction and panels that offer more comfort with a pack.
100% Merino Wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance
Crew neck with set in sleeves
Back body seam wraps to front for body-enhancing fit
Shoulder panels eliminate top shoulder seams
Flatlock seam construction designed to minimize chafing