The Jack Wolfskin Womens Arctic XT Tight in this Black colourway are made of a soft fabric with merino wool. The wool provides superb insulation and is fast wicking. It also has odour inhibiting properties. The synthetic fibre fabric on the outside makes these tights really hard wearing. The ARCTIC XT TIGHTS are an excellent base layer for skiing, snowboarding, winter hiking or snowshoeing. Merino Double Knit S.Fresh: Warm, soft, double knit fabric with antibacterial, odour inhibiting properties Moisture regulating Stretch fabric