Adventure all day in the cold with the enhanced breathability of the men's Smartwool Intraknit Thermal Merino Colorblock Crew base layer top, designed with body-mapped mesh and distinctive patterning.

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Keep your temperature just right on cold days with the built-in ventilation of the men's Smartwool Intraknit Thermal Merino Colorblock Quarter-Zip base layer top featuring body-mapped mesh zones.

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Keep your temperature just right on cold days with the built-in ventilation of the women's Smartwool Intraknit Thermal Merino Colorblock Quarter-Zip base layer top featuring body-mapped mesh zones.

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This minimalist Smartwool Intraknit Thermal Merino crew base layer top is anything but insignificant. It's a lightweight, super-moveable top perfect for all of your sweatiest cold-weather activities.

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This minimalist Smartwool Intraknit Thermal Merino women's crew base layer top is lightweight and super-moveable—perfect for all of your sweatiest cold-weather activities.

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Whether you're skiing, ice-fishing or snowmobiling, set the tone for all-day comfort with the body-mapped mesh vents of the men's Smartwool Intraknit Thermal Merino Half-Zip base layer hoodie.

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Highlight your base-layer comfort in floral. The women's Smartwool Intraknit Thermal Merino Pattern crew top is designed with targeted mesh-ventilation and a 3D-mapped fit to venture through the day.

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Engineered to enhance performance and maximize mobility, the men's Smartwool Intraknit Thermal Merino Quarter-Zip base layer is durable and warm yet lightweight and easy to layer thanks to a slim fit.

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A good choice for cool-weather adventures, the women's Smartwool Intraknit Thermal Merino quarter-zip base layer top helps keep your body dry and comfortable—and the fit won't slow you down.

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Keep their feet warm and comfortable lap after lap in the durable, tech-driven Smartwool Junior Ski Zero Cushion Skication Print Over The Calf kids' socks.

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In the stands, on a hike or behind the wheel, Smartwool liner gloves offer the benefits of both merino wool and polyester whether worn on their own or as liners—and they're touch-screen compatible.

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Enjoy a warm merino/polyester blend that helps move sweat, dries quickly and holds its shape during high-sweat activities in colder weather with the men's Smartwool Long-Sleeve Colorblock henley.

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Layered under a pair of pants or on their own, these women's Smartwool Merino 150 Lace base layer bottoms are just the thing for an afternoon of snowshoeing or cool-weather hiking.

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Whether you wear it on its own or as a base layer, the women's Smartwool Merino 150 Lace V-Neck short-sleeve top is designed for comfort when you're on the move.

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