3.0 Men&
3.0 Men&
3.0 Men&
3.0 Men&
3.0 Men&

3.0 Men's Merino Bi-Layer Heritage Pant

Regular price$45.00


Our Merino Bi-Layer Pant is a great Merino mid-weight layer for the benefits of Merino wool without the expense. These thermal long johns features a Merino wool blend outer layer and a 100% polyester inside layer. This two-layer construction traps air for increased warmth without weight. Goes great with the Merino Bi-Layer Crew.


  • Thermoregulation Technology keep you warm and dry
  • 2-layer construction enhances breathability
  • UPF Rating 25+
  • All flat seam construction to prevent chafing
  • Stretch comfort waistband and fly front for a great fit
  • 30" inseam, ankle-length fit


  • Climasense fiber fusion is designed to regulate your optimal temperature
  • Thermoregulation technology provides comfort through a wide range of temperatures
  • UPF rated for sun protection
  • Natural Breathability allows you to warm up or cool down with ease
  • Odor Control neutralizes sweat and odor


  • 87% Polyester, 13% Merino Wool


Enjoy free U.S. Domestic shipping on all orders above $75

Customer Reviews

Based on 10 reviews
Mac C.
Not long enough

The garment I purchased was sold as "Long" but was far shorter than Terramar "Long" undergarments I purchased locally. The 3.0 Men's Merino Bi-Layer Heritage Pant could use more length at the waist.

Cindy Munski

I have not received my order yet

Paul W.
Great Winter Base Layer

I've actually had my set for 2 or 3 years, so I've had a chance to assess their longevity as well as quality. These are excellent. They are as comfortable as cotton, although they have no cotton in them. I hand-wash mine every day (in the winter) when I get home from running (1-5 miles). This probably extends their life, vs washing/drying in machines. I haven't had any problem with fit, warmth or perspiration control. The only thing I might recommend to Terramar is to put the little (man) emblem back on these, so that we know which is the back and front. The label on these wore away quickly.
While not as thick as the dis-continued Outlast Merino Wool Base Layer, the Merino Wool Top and Bottom are rugged, soft and comfortable.

John Bryn
Good service but slow response

Received my order in excellent time and satisfied with product. But I sent an email with a question about a future product to purchase a week ago and have yet to receive a response.

Ron Harris

Merino Wool Bottom

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