The Smartwool Classic Thermal Merino Base Layer 1/4 Zip Top is a staple in the base layer world. Constructed of 100% merino wool for enhanced comfort, breathability, and odor resistance. Exactly what you need for hitting the hill day after day.
Slim Fit
Flatlock seam construction designed to minimize chafing
Shoulder panels eliminate top shoulder seams
100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance
