The 7 Best Men's Merino Wool Long Underwear

Updated February 22, 2017 by Brett Dvoretz

Best High-End
Best Mid-Range
Best Inexpensive
We spent 26 hours on research, videography, and editing, to review the top choices for this wiki. Merino wool comes from sheep that live in the coldest of climates, so that you, too, can feel cozy when romping in the frigid mountains. We found long underwear made from this super-soft material that will fit nicely under your top layers, but looks attractive enough to wear by itself. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best men's merino wool long underwear on Amazon.

7. Sportown Full-Length

The Sportown Full-Length are cozy, lightweight bottoms you'll wish you could wear all day. They offer plenty of mobility, attractive and edgy seams, along with advanced moisture-wicking technology, but the sizing is off for some wearers.
  • ankles can be tucked into boots
  • offer great temperature control
  • crotch area needs a better closure
Brand Sportown
Model pending
Weight pending
Rating 4.0 / 5.0

6. Merino 365 Longsleeve

The Merino 365 Longsleeve has convenient thumb loops, making it easy to put a jacket on over it without having the sleeves bunch up inside. Also, it barely looks like a base layer so you could even wear it to a restaurant and nobody would be any the wiser.
  • available in stripes and solids
  • holds its shape after plenty of use
  • some find the material scratchy
Brand Merino 365
Model pending
Weight 8.2 ounces
Rating 4.0 / 5.0

5. Meriwool 250

The Meriwool 250 feature a classic look that is easy to match with any top. These bottoms are the perfect thickness to either wear solo around the house during a crisp day or layer up on a winter adventure. Plus, they have a convenient fly opening at the crotch.
  • high quality stitching
  • don't look bulky under pants
  • sizing is very accurate
Model pending
Weight pending
Rating 4.0 / 5.0

4. Minus33 Kancamagus

The Minus33 Kancamagus are the perfect midweight long johns, featuring a highly elastic waistband; ankle cuffs that hug the leg well, making them easy to slide into top layers; and a totally tagless design, so they'll never cause you to itch.
  • available in seven colors
  • high ultraviolet protection ranking
  • silky smooth to the touch
Brand Minus33 Merino Wool
Model 706
Weight 16 ounces
Rating 4.0 / 5.0

3. WoolX Heavyweight

The WoolX Heavyweight provide incredible insulation in extreme weather conditions while remaining rather lightweight and thin, so you won't feel overly-bundled in them. They have a form-fitting design that shows off those snowboarding muscles.
  • cool logo around the waistband
  • long enough for tall wearers
  • dry quickly after getting wet
Brand WoolX
Model pending
Weight 16 ounces
Rating 4.9 / 5.0

2. Minus33 Ticonderoga

You'll turn heads in the ski lodge when you wear the flattering Minus33 Ticonderoga, with its flatlock seams that let your biceps do the talking, slim cut, and classic crew neck. This lightweight top will keep you perfectly comfortable under a jacket.
  • affordable and well-made
  • extra flexible construction
  • will not shrink in the wash
Brand Minus33 Merino Wool
Model 718
Weight 16 ounces
Rating 4.7 / 5.0

1. WoolX Explorer LS Top

The WoolX Explorer LS Top has a unique, rounded hemline that offers a little more warmth to your rear end, making it a great option to wear without a coat. Plus, its cuffs fit snugly around your wrists to keep the cold air out.
  • fits well without feeling tight
  • comfortable underarm gussets
  • will keep you very warm
Brand WoolX
Model X502
Weight 16 ounces
Rating 4.8 / 5.0

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Last updated on February 22, 2017 by Brett Dvoretz

A wandering writer who spends as much time on the road as behind the computer screen, Brett can either be found hacking furiously away at the keyboard or perhaps enjoying a whiskey and coke on some exotic beach, sometimes both simultaneously, usually with a four-legged companion by his side. He hopes to one day become a modern day renaissance man.

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