Unisex Super Thermo Longs Base Layer, no Fly

(1 customer review)


Made from 100% Polycolon® mesh with inlay in thigh and crotch, the ST full length longs provide exceptional warmth and moisture management. No fly.
This base layer is perfect for all cold weather activities. Sizes: XS – XXXL.
Color: black.

Technical specifications:

Material: 100% polypropylene
Weight: 130g
Material Weight: net 140 g / m2

SKU: 10200400 Category:


Brynje original Super Thermo (ST) mesh is made from 100% Schoeller® Polycolon® synthetic yarn, knitted into a 3/8″ open weave mesh that provides 4 to 6 times the insulating power of any solid knit by weight. The polypropylene yarn absorbs virtually no moisture while the mesh design allows perspiration to pass through the garment in vapor form. Nothing wet against the skin!

Polypropylene also has a very high strength to weight ratio providing super light garments designed to withstand years of extreme use. Brynje Super Thermo base layers have been used extensively in expedition work and are worn by Special Forces troops across the globe. Brynje ST garments are not just ideal for high intensity, cold weather activities. Because of the thermostatic qualities of the mesh, these base layer garments are exceptional for warm weather use as well. “Making the case for synthetic mesh base layers.”

Additional information





1 review for Unisex Super Thermo Longs Base Layer, no Fly

  1. Sarah Stabley (verified owner)

    I’m 5’3’ and 160 lbs female. I ordered a large and they fit perfectly around my waist and hips/thighs. They were a little on the long side but that didn’t pose much of a problem. I was easily able to put on tight-ish jeans and leggings over them without a problem.
    I slept in these at 28* with a 10* down quilt and was snug as a bug.
    At 4.8oz for a large I would highly recommend these for those wanting to cut oz and still be warm!

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Brynje Size Chart

Brynje Size Chart

Laundry Instructions

Wool is a natural fiber which does not to be laundered regularly. A global wardrobe survey in 2015 by AC Nielsen confirmed that wool garments have a longer life than cotton – as much as 50% longer. Merino wool can be worn multiple time between washings which will prolong the garment life and protect the environment. The synthetic fibers like Schoeller® Polycolon can be machine washed and hung to dry.

Hand wash or machine wash on gentle cycle with cool water (not to exceed 85°F).

Line dry. Do not tumble dry.

Do not use bleach.

Do not use fabric softener.

Do not dry clean.

Brynje USA