Best Smartwool Base Layers

Merino Wool Base Layer - Mens 100% Merino Wool Long Sleeve Thermal Shirts Lightweight, Midweight, Heavyweight + Merino Socks (Medium, Black 250)

Merino Wool Baselayer Mens Set - Lite, Midweight, Heavyweight Merino Wool Thermal Underwear for Men Top and Bottom + Socks (X-Large, 250 Charcoal Grey)

Merino Wool Base Layer Women 100% Merino Wool Lite, Midweight, Heavyweight Long Sleeve Thermal Shirts + Wool Socks (Medium, Black 250)

Merino.tech Merino Wool Base Layer Mens Bottom Pants 100% Merino Wool Midweight Thermal Underwear Leggings + Merino Wool Hiking Socks (Large, Black 250)

Merino Wool Base Layer Womens Set - Lite, Mid, Heavyweight Merino Wool Thermal Underwear for Women Top and Bottom + Socks (Medium, 250 Black)

Merino Wool Base Layer Women Pants 100% Merino Wool Leggings Thermal Underwear Bottoms Lite, Midweight, Heavyweight + Socks (Medium, Black)

Runhit Thermal Long Underwear for Men Skiing Warming Base Layer Set Mens Long Johns Long Sleeve Thermal Top & Bottom Snowboarding Black S

Merino.tech Merino Wool T-Shirt Mens - 100% Organic Merino Wool Undershirt Lightweight Base Layer + Hiking Wool Socks (Large, Black Ink)

DANISH ENDURANCE Merino Wool Base Layer Top & Bottom Set, Breathable & Moisture-Wicking, for Men, Green, XX-Large

Merino Wool Base Layer Men Long Sleeve Half Zip Shirt (Medium, 320 Army Green)