The magic of the Tuvegga product line lies in the fabrics structure. One side is smooth, while the other has raised horizontal ridges. When you wear a Tuvegga garment with the smooth side against your skin, it wicks moisture more quickly; when you wear it with the ridged side against your skin, it traps more body-warmed air. Tuvegga base layer pants and shirts are already well knownnow theres also a balaclava! - The Tuvegga balaclava works for winter cycling, skiing and snowboarding in cold weather, and even for ice fishing trips. - Material is fine merino wool, pleasant against the skin, fiber thickness 18.7 microns - Mesh fabric in front of the mouth and nose