The Devold TUVEGGA SPORT AIR WOMAN LONG JOHNS are functional, reversible wool long johns for women. This base layer is made from a combination of 3 different knitted fabrics: wool Mesh, classic ribbed knit, and reversible 3D knit. The reversible knit has temperature-regulating air pockets that offer two selectable levels of insulation. The smooth knit wicks moisture away into the 3D knit when it comes into contact with the skin, where it evaporates very quickly. When turned inside out, the functionality changes and the 3D knit keeps more air by the skin, which increases thermal comfort. The reversible construction is used on the cold parts of the body in the thighs and glutes. The first layer has a high knit at the skin which keeps more air inside thus increasing thermal comfort. The second layer is made up of a smooth knit to ensure high breathability.