Daehlie's Active Wool technical underwear for men keeps you warm with its merino wool and Tencel design. Merino wool ensures efficient moisture wicking to keep you dry and warm while Tencel provides added strength and retained breathability. Its seams are flattened and strategically placed to avoid uncomfortable chafing. The merino wool is sourced from Australia and is certified mulesing free. Features of the Bjorn Daehlie Active Wool Long Sleeve : Composition: Merino wool - Tencel LyocellMerino wool from Australia, guaranteed without mulesingØ 19.5mic fibersStrategically placed flat seamsWater printed logoBluesign and Oeko-Tex Standard 100 certifications Nordic thermal underwear Bjorn Daehlie ---Active Wool Long Sleeve Surf The Web