Smartwool Men's Classic Thermal Merino Crew Long Sleeve Base Layer Shirt - Meet the better-than-ever Men's Classic Thermal Merino Base Layer Crew with a new fit to improve functionality while enhancing aesthetics. Shoulder panels eliminate top shoulder seams and a flatlock seam construction helps prevent chafing. Add one of these base layers to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking. Slim fit 100% Merino wool fabric Interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance Fit updated to improve functionality while enhancing aesthetics Shoulder panels eliminate top shoulder seams Flatlock seam construction designed to minimize chafing Weight: 276g Style: SW016349