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Smartwool Long Underwear

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Smartwool Women's Merino 250 Baselayer Bottom
  • BLACK
  • BLACK
  • BLUE
  • GREY
  • PURPLE

Smartwool
Women's Merino 250 Baselayer Bottom

From $71.21   $99.95
up to 25% off
Smartwool Men's NTS Mid 250 Zip T
  • BLACK
  • BLACK
  • BLUE
  • BLUE
  • BLUE
  • BROWN
  • BROWN
  • GREEN
  • GREY
  • GREY
  • KHAKI

Smartwool
Men's NTS Mid 250 Zip T

From $70.99   $109.95
up to 29% off
Smartwool Women's NTS Mid 250 Bottom
  • BLACK
  • GREEN
  • GREEN
  • OFFWHITE
  • OFFWHITE
  • PINK
  • PINK

Smartwool
Women's NTS Mid 250 Bottom

From $63.99   $99.95
up to 33% off
Smartwool Men's PhD Light LS Top
  • GREY
  • BLUE

Smartwool
Men's PhD Light LS Top

From $49.99   $84.95
up to 41% off
Smartwool Women's Merino 250 Baselayer Pattern Crew Top
  • OFFWHITE
  • BLACK
  • BLUE
  • GREEN
  • OFFWHITE
  • PURPLE
  • PURPLE

Smartwool
Women's Merino 250 Baselayer Pattern Crew Top

From $78.71   $104.95
up to 25% off
Smartwool Women's NTS Micro 150 Thong
  • GREY
  • BLACK
  • PINK

Smartwool
Women's NTS Micro 150 Thong

From $13.99   $27.95
up to 46% off
Smartwool Men's NTS Mid 250 Pattern Crew
  • BROWN
  • BLACK
  • BLUE
  • KHAKI

Smartwool
Men's NTS Mid 250 Pattern Crew

From $78.71   $104.95
up to 25% off
Smartwool Girl's Whirlgig Tight
  • GREY
  • PINK

Smartwool
Girl's Whirlgig Tight

$27.99   $36.95
24% off
Smartwool Men's NTS Mid 250 Zip T
  • GREY
  • BLACK

Smartwool
Men's NTS Mid 250 Zip T

From $74.96   $99.95
up to 25% off
Smartwool Men's NTS Mid 250 Crew Top
  • BLUE
  • ORANGE

Smartwool
Men's NTS Mid 250 Crew Top

From $69.99   $94.95
up to 26% off
Smartwool Women's PhD Capri
  • BLUE
  • BLACK
  • BLACK

Smartwool
Women's PhD Capri

From $74.96   $99.95
up to 25% off
Smartwool Women's The Tight II
  • BROWN
  • BLACK
  • GREY

Smartwool
Women's The Tight II

From $35.21   $46.95
up to 25% off
Smartwool Women's NTS Mid 250 Zip T
  • BROWN
  • PINK

Smartwool
Women's NTS Mid 250 Zip T

From $72.99   $99.95
up to 27% off
Smartwool Kids' Mid 250 Zip T
  • BLUE
  • BLACK

Smartwool
Kids' Mid 250 Zip T

$48.71   $64.95
25% off
Smartwool Men's Echo Lake Full Zip Top
  • GREY
  • BROWN

Smartwool
Men's Echo Lake Full Zip Top

$127.46   $169.95
25% off
Smartwool Women's NTS Mid 250 Zip T
  • BLUE
  • GREY
  • GREY

Smartwool
Women's NTS Mid 250 Zip T

$75.99   $109.95
31% off
Smartwool Kids' Mid 250 Crew Top
  • BLACK

Smartwool
Kids' Mid 250 Crew Top

$44.96   $59.95
25% off
Smartwool Kids' Mid 250 Bottom
  • BLACK

Smartwool
Kids' Mid 250 Bottom

$44.96   $59.95
25% off
Smartwool Women's NTS Mid 250 Crew Top
  • BLUE
  • PINK

Smartwool
Women's NTS Mid 250 Crew Top

$74.99   $94.95
21% off
Smartwool Men's NTS Mid 250 Color Block Hoody
  • BROWN
  • BLACK

Smartwool
Men's NTS Mid 250 Color Block Hoody

From $70.99   $129.95
up to 45% off
Smartwool Women's PhD Light Zip T
  • GREY
  • BLUE

Smartwool
Women's PhD Light Zip T

$60.99   $94.95
36% off
Smartwool Men's PhD Light Zip T
  • BLUE

Smartwool
Men's PhD Light Zip T

$65.99   $94.95
31% off
Smartwool Men's NTS Mid 250 Color Block Crew Top
  • BLUE
  • BLACK

Smartwool
Men's NTS Mid 250 Color Block Crew Top

From $67.99   $104.95
up to 35% off
Smartwool Women's NTS Mid 250 Sport Hoody
  • PURPLE

Smartwool
Women's NTS Mid 250 Sport Hoody

$118.99   $149.95
21% off
Smartwool Men's Merino 250 Jogger Bottom
  • GREY

Smartwool
Men's Merino 250 Jogger Bottom

$86.21   $114.95
25% off
Smartwool Men's PhD Light Bottom
  • GREY
  • BLACK

Smartwool
Men's PhD Light Bottom

From $63.71   $84.95
up to 25% off
Smartwool Men's NTS Mid 250 Bottom
  • BLACK

Smartwool
Men's NTS Mid 250 Bottom

$74.96   $99.95
25% off
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About Smartwool Long Underwear:

In case you weren’t in the know, we wanted you to be aware that it can get cold out there. Actually, let’s correct that: It will get cold out there. It’s not a matter of if, it’s a matter of when, and shouldn’t you plan your outfit accordingly? No sense in putting yourself in harm’s way when it comes to chilly weather, so building a cold temperature fighting fortress around yourself sounds like a great idea. While others might put all the importance on outerwear, getting yourself into a powerful baselayer can do wonders – that’s what’s so great about Smartwool’s long underwear. Able to provide some incredible warmth at the base level, never worry about the inevitability of cold weather again.

Best known for their incredibly comfortable line of socks and footwear, Smartwool has taken their wizard-like knowledge of harnessing the awesome power of wool and translated that to a number of inspired activewear solutions, with the long underwear above a perfect example of this. Not content to be strictly and simply wool, this is sun protected material so you can be sure to keep harmful sun radiation out while you’re spending your days outdoors.

Chafing is a thing of the past, what with flatlock seam construction eliminating any chance of uncomfortable irritation. This is under layer material that just fits better, made by a brand that knows a thing or two about comfort. Because that’s the most important thing – you’re able to enjoy yourself most when you’re at your most comfortable. No sense in getting into premium athletic apparel if it’s only going to aggravate you – Smartwool build their clothes better, so when that inevitable cold hits you’ll be all set.

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