Men's Smartwool Classic Thermal Merino Colorblock Baselayer Top Long Sleeve Base Layer,T-Shirt 4017-SW016353 With new patterns, a fresh look, and even more comfort, our Men's Merino 250 Base Layer Pattern Crew is being its best self. We've updated this 100% Merino wool fan-favorite with new colors and a new fit to improve functionality while enhancing aesthetics. Shoulder panels eliminate top shoulder seams and a flatlock seam construction helps minimize chafing. Add one of our best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking. Features Flatlock seam construction designed to minimize chafing Slim Fit 100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance Fit updated to improve functionality while enhancing aesthetics Shoulder panels eliminate top shoulder seams Men's Smartwool Classic Thermal Merino Colorblock Baselayer Top Long Sleeve Base Layer,T-Shirt