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Heavyweight long-underwear bottoms just make your legs turn into sweaty logs by the end of the day. And ankle-length long-underwear bottoms make it seem like there's about 50 yards of fabric bunched up inside your boots. Welcome to the SmartWool NTS Lightweight Boot Top Bottom. Lightweight merino wool naturally regulates your body temperature, and the shorter length means no more boot bunching.

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SmartWool NTS Lightweight Boot Top Bottom - Men's

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Here's what others have to say...

3 5

runs short?

  • Familiarity: I've used it several times
  • Fit: Runs small

Well, of course it runs short at 3/4.

However, being 6'5" usually wearing 34x34 i went with L: bending one's knees results in pants cuff slipping and sticking up around the back of the knee.

maybe XL would have been a better deal, but i doubt an additional inch in length would have made up for a oversize fit around the hip..

else, trim and garment are of well known smartwool quality.

i'd give it a 4 if the these cuffs wouldn't be that rigid but more snug.

and yes, keeps you well warm enough worn underneath a gore tex bib (if you keep moving).

4 5

Great base layer

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: True to size

Awesome base layer for skiing, the 3/4 length really helps avoid bunching up at the boot! My socks meet the bottom of the pants perfectly so my entire leg is covered. Im 6'1" and went with the size large, they fit very well.

5 5


  • Gender: Male
  • Familiarity: I've put it through the wringer

Perfect for skiing, the 3/4 length avoids extra bunched up fabric above the boot, and the dreaded cuff calf. The Smartwool fabric avoids stink, making these ideal for multi-day trips.

5 5

Super Warm for all your activities

  • Familiarity: I've put it through the wringer

After having the full length version of these, I finally got the 3/4 and I am in love. They are really functionally and you get the same performance and warmth of the full length mid weight. Great athletic cut and fit.