Men's Underwear › Smartwool › Undershirt › Tops

The athletic fit of Smartwool's Merino Sport Ultralite Long Sleeve Shirt compl... The athletic fit of Smartwool's Merino Sport Ultralite Long Sleeve Shirt complements the movements of your body. With comfort features like offset shoulder and side seams to help minimize chafing, this very light and soft tee is made with a blend of... more

The athletic fit of Smartwool's Merino Sport Ultralite Long Sleeve Shirt compl... The athletic fit of Smartwool's Merino Sport Ultralite Long Sleeve Shirt complements the movements of your body. With comfort features like offset shoulder and side seams to help minimize chafing, this very light and soft tee is made with a blend of... more

This minimalist-style crew is anything but insignificant. The Smartwool Men's ... This minimalist-style crew is anything but insignificant. The Smartwool Men's Intraknit Thermal Merino Base Layer Crew is a lightweight, super-moveable top, made for all of your most extreme cold-weather activities. With Merino Sport yarns and... more

This minimalist-style crew is anything but insignificant. The Smartwool Men's ... This minimalist-style crew is anything but insignificant. The Smartwool Men's Intraknit Thermal Merino Base Layer Crew is a lightweight, super-moveable top, made for all of your most extreme cold-weather activities. With Merino Sport yarns and... more

This minimalist-style crew is anything but insignificant. The Smartwool Men's ... This minimalist-style crew is anything but insignificant. The Smartwool Men's Intraknit Thermal Merino Base Layer Crew is a lightweight, super-moveable top, made for all of your most extreme cold-weather activities. With Merino Sport yarns and... more

This minimalist-style crew is anything but insignificant. The Smartwool Men's ... This minimalist-style crew is anything but insignificant. The Smartwool Men's Intraknit Thermal Merino Base Layer Crew is a lightweight, super-moveable top, made for all of your most extreme cold-weather activities. With Merino Sport yarns and... more

Meet the Smartwool Men's Intraknit Thermal Merino Base Layer 1/4 Zip Shirt. Th... Meet the Smartwool Men's Intraknit Thermal Merino Base Layer 1/4 Zip Shirt. This bulk-free, 100% Merino wool thermal layer brings a new dimension to active winter wear. With seamlessly integrated insulation and ventilation, perfectly articulated flex... more

This minimalist-style crew is anything but insignificant. The Smartwool Men's ... This minimalist-style crew is anything but insignificant. The Smartwool Men's Intraknit Thermal Merino Base Layer Crew is a lightweight, super-moveable top, made for all of your most extreme cold-weather activities. With Merino Sport yarns and... more

Meet the Smartwool Men's Intraknit Thermal Merino Base Layer 1/4 Zip Shirt. Th... Meet the Smartwool Men's Intraknit Thermal Merino Base Layer 1/4 Zip Shirt. This bulk-free, 100% Merino wool thermal layer brings a new dimension to active winter wear. With seamlessly integrated insulation and ventilation, perfectly articulated flex... more

This minimalist-style crew is anything but insignificant. The Smartwool Men's ... This minimalist-style crew is anything but insignificant. The Smartwool Men's Intraknit Thermal Merino Base Layer Crew is a lightweight, super-moveable top, made for all of your most extreme cold-weather activities. With Merino Sport yarns and... more

This minimalist-style crew is anything but insignificant. The Smartwool Men's ... This minimalist-style crew is anything but insignificant. The Smartwool Men's Intraknit Thermal Merino Base Layer Crew is a lightweight, super-moveable top, made for all of your most extreme cold-weather activities. With Merino Sport yarns and... more

Meet the Smartwool Men's Intraknit Thermal Merino Base Layer 1/4 Zip Shirt. Th... Meet the Smartwool Men's Intraknit Thermal Merino Base Layer 1/4 Zip Shirt. This bulk-free, 100% Merino wool thermal layer brings a new dimension to active winter wear. With seamlessly integrated insulation and ventilation, perfectly articulated flex... more

Meet the Smartwool Men's Intraknit Thermal Merino Base Layer 1/4 Zip Shirt. Th... Meet the Smartwool Men's Intraknit Thermal Merino Base Layer 1/4 Zip Shirt. This bulk-free, 100% Merino wool thermal layer brings a new dimension to active winter wear. With seamlessly integrated insulation and ventilation, perfectly articulated flex... more

Smartwool updated the fit of their Classic Thermal Merino Base Layer 1/4 Zip S... Smartwool updated the fit of their Classic Thermal Merino Base Layer 1/4 Zip Shirt to improve functionality while enhancing aesthetics. As one of their heaviest base layer fabrics this garment delivers 100% responsibly sourced merino wool, shoulder... more

Smartwool updated the fit of their Classic Thermal Merino Base Layer 1/4 Zip S... Smartwool updated the fit of their Classic Thermal Merino Base Layer 1/4 Zip Shirt to improve functionality while enhancing aesthetics. As one of their heaviest base layer fabrics this garment delivers 100% responsibly sourced merino wool, shoulder... more

Smartwool updated the fit of their Classic Thermal Merino Base Layer 1/4 Zip S... Smartwool updated the fit of their Classic Thermal Merino Base Layer 1/4 Zip Shirt to improve functionality while enhancing aesthetics. As one of their heaviest base layer fabrics this garment delivers 100% responsibly sourced merino wool, shoulder... more

Smartwool updated the fit of their Classic Thermal Merino Base Layer 1/4 Zip S... Smartwool updated the fit of their Classic Thermal Merino Base Layer 1/4 Zip Shirt to improve functionality while enhancing aesthetics. As one of their heaviest base layer fabrics this garment delivers 100% responsibly sourced merino wool, shoulder... more

Smartwool updated the fit of their Classic Thermal Merino Base Layer 1/4 Zip S... Smartwool updated the fit of their Classic Thermal Merino Base Layer 1/4 Zip Shirt to improve functionality while enhancing aesthetics. As one of their heaviest base layer fabrics this garment delivers 100% responsibly sourced merino wool, shoulder... more

Smartwool updated the fit of their Classic Thermal Merino Base Layer 1/4 Zip S... Smartwool updated the fit of their Classic Thermal Merino Base Layer 1/4 Zip Shirt to improve functionality while enhancing aesthetics. As one of their heaviest base layer fabrics this garment delivers 100% responsibly sourced merino wool, shoulder... more

Meet the better-than-ever Smartwool Men's Classic Thermal Merino Base Layer Cr... Meet the better-than-ever Smartwool Men's Classic Thermal Merino Base Layer Crew. This 100% Merino wool fan-favorite has been updated with new colors and a new fit to improve functionality while enhancing aesthetics. Shoulder panels eliminate top... more