Merino thermal underwear - Long Johns - ORIGOPRO Merino Thermal Underwear Long Johns

Origopro's thermal underwear is composed of two fibrous materials, which are combined to complement each other.  Merino wool has a heat-insulating fiber and Cordura polyamide yarn is on the surface to provide abrasion resistance.  The 100% merino wool, which is against the skin,  is a soft 19 Micron strong merino sheep's wool that does not contain artificial fibers.  Cordura is used in many durable applications, such as motorcycle clothing and workwear.

Unisex Super Thermal Undershirt

Womens Long Underwear and Base Layers — JAXOutdoorGearFarmandRanch

100% Merino Wool Men's Midweight Base Layer Thermal Underwear

Guardian TECHNICAL British Made Mens Merino Thermal Underwear Long

Unisex Super Thermal Undershirt

Organic Wool Long Johns for Men & Women – Danish Woolen Delight

The Smartwool Midweight Long Underwear bottoms offer natural stretch and breathability for stop-and-go activities or when temperatures fluctuate.

Midweight Long Underwear Bottoms - Wool - Men's

Unisex Super Thermal Undershirt

Pro Club Thermal Long Pants Underwear

Men's Merino Thermal Base Layers

Organic Wool Long Johns for Men & Women – Danish Woolen Delight

Merino Wool Underlayer (bottom)

Stanfield's 2 layer long underwear bottoms offers a soft inner layer of blended cotton and polyester next to your skin for all day itch free comfort.

Stanfield's Men's Thermal 2 Layer Merino Wool Blend Long Johns Underwear Baselayer