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Classic Merino Wool Thermal Leggings video
(5)5

Classic Merino Wool Thermal Leggings

Smartwool

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Details & care

Made from pure merino wool that naturally resists odors and helps regulate your body temperature, these thermal leggings keep you warm in chillier weather.

  • 30 1/2" inseam (size Medium)
  • Merino wool naturally resists odors and helps regulate body temperature for comfort
  • 100% merino wool
  • Machine wash, tumble dry
  • Imported
  • Item #7363862
  • Core Product ID 3333375BPK

Size info

  • XS=0-2, S=4-6, M=8-10, L=12-14, XL=16.
  • Get the fit you want. Book an appointment with our onsite experts or stop by your nearest store.

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Smartwool

Smartwool was launched in 1994 in Steamboat Springs, Colorado, and initially specialized in performance socks made of Merino wool. Today the company continues to push the boundaries of Merino to create smarter, more capable outdoor apparel from head to toe. Built on the desire to be comfortable outside, Smartwool exists to help people play, live and laugh in the great outdoors.

Reviews

(5)54.6 out of 5
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Mar 30, 2024

Low rise leggings

I'm 5'5" and these were nice and long, which is good. Unfortunately, these are low rise and definitely made for people with a flat butt. It felt weird to bend like the fabric doesn't move with you. I wish they made a mid rise version.
Lkl2
Fit: True to size
Small
True to size
Large
8found this helpful
Sept 18, 2026

Perfect fit and very warm

Fits perfectly and it very soft. I haven’t tried it on yet for the cold, as it’s still pretty warm in Alaska right now. My husband has a base layer from Smartwool too and tried them lasr year and was very happy with them, so I’m sure they’ll serve me well.
Evelyn
Sept 10, 2026

Ready for the cold

Love the thickness and so comfy on, not itchy at all. Bring on the cold, from Minnesota.
Becki
June 9, 2026

The best long johns

Super comfy and warm! I’ve had my first pair for four years, wearing them just about every other day in winter, and they just got their first little hole. So, quite a sturdy garment considering how fine the fabric is. Happy to have a new pair in black.
Pia
June 5, 2026

Smartwool is my favorite ❤️

I love Smartwool base layers. The tops have cute designs and you can get matching bottoms. I wear the tops like a regular sweater with jeans in the winter and have received several compliments. We recently went to Antarctica and the base layer tops and bottom were light to pack and also warm and comfortable to wear. 👍🏻😊
Linda B.