Icebreaker Base Layer Smartwool Men's Classic Thermal Merino Wool Base Layer - Long Sleeve Slim Fit Thermal Layer For Hiking Skiing Shoulder panels eliminate top shoulder seams and a flatlock seam construction helps prevent chafing. Men's Classic Thermal Merino Base Layer Crew - The Benchmark Outdoor Outfitters Flatlock seam construction and offset shoulder and side seams designed to help increase comfort and minimize chafing Side seams wrap to front The Men's Classic Thermal Merino Base Layer Crew is your go-to for cold-weather comfort. Made from 100% merino wool, this slim-fit top helps regulate temperature, manage moisture, and resist odors. Updated shoulder panels and flat seams reduce rubbing, making it great for skiing, hiking, or just staying warm during fall and winter adventures... We've updated this 100% Merino wool fan-favorite with new colors and a new fit to improve functionality while enhancing aesthetics. Men's Running Apparel - Athletic Clothing - AARC - Ann Arbor Running Our slim fit is intended to follow the contours of the body