Devold® Power flame retardant wool underwear that provides high protection against cold, heat and electric arcs. Our designers have focused on both functionality and comfort. Devold® Power is interlock knitted from 100% Super wash merino wool, resulting in incredible soft and comfortable garments. The shirts have raglan sleeves, side panels and a dropped tail, to give maximum movability. Devold® Power is Zirpro treated to give extra flame retardant properties. The garments are machine washable, and can be tumble dried at low temperature.