We've updated the fit of our Men's Merino 250 Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of our heaviest base layer tops and best base layers for cold weather, this garment uses 100% responsibly sourced Merino wool, shoulder panels, and a flatlock seam construction to help minimize chafing as well as help keep you comfortable and temperature regulated as you enjoy high-intensity skiing, hiking, running, and more. BenefitsMerino 250This heavier, soft, 100% Merino wool fabric offers breathable warmth, moves sweat away from the body, and provides next-to-skin comfort in colder conditions.Slim Fit>100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odour resistance>Fit updated to improve functionality while enhancing aesthetics>Shoulder panels eliminate top shoulder seams>Flatlock seam construction designed to minimize chafing>Machine Wash Warm Gentle Cycle.>Do Not Bleach.>Tumble Dry Low.>Cool Iron As Needed.>Do Not Dry Clean.>Wash With Like Colours.>Do Not Iron Decorations.