Base Layer Tops

Get the comfort and warmth of this warmest-weight base layer in a pullover with the Smartwool Men's Merino 250 Base Layer Hoodie. Featuring a mountain-inspired pattern and a higher neck on the hood for more coverage when worn down, this 100% Merino wool hoodie makes it easy to get inspired and feel prepared to brave the cold weather for your next adventure. Slim Fit Higher neck on hood provides extra neck coverage and warmth when worn down Flatlock seam construction designed to minimize chafing Set-in sleeves with shoulder panels designed to eliminate top shoulder seams 100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance

Meet the better-than-ever Men's Classic Thermal Merino Base Layer Crew. Smartwool updated this 100% Merino wool fan favorite with a new fit to improve functionality while enhancing aesthetics. Shoulder panels eliminate top shoulder seams, and a flatlock seam construction helps prevent chafing. This is one of the best base layers for cold weather skiing, hiking, climbing, or biking. Slim Fit Flatlock seam construction designed to minimize chafing Shoulder panels eliminate top shoulder seams Fit updated to improve functionality while enhancing aesthetics 100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance

Meet the new and improved Women's Classic Thermal Merino Base Layer Crew. Smartwool updated this 100% Merino wool fan favorite with an enhanced fit to improve functionality while elevating aesthetics. The addition of shoulder panels and its flatlock seam construction help prevent chafing and increase your comfort level. Grab one or two of the best base layers for cold weather skiing, hiking, climbing, or biking. Slim Fit Flatlock seam construction designed to minimize chafing Crew neck with raglan sleeves Back body seam wraps to front for body-enhancing fit Fit updated to improve functionality while enhancing aesthetics for a range of body shapes 100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance