Devold Expedition Arctic Pro merino shirt was developed in collaboration with polar explorer Børge Ousland, who has relied on Devold’s Expedition series for his expeditions throughout the years. Designed for the toughest and most inhospitable environments in the world, the Expedition base layers offer exceptionally high insulation and unique moisture-wicking properties. The inside is made from 100% soft merino wool, while the outside consists of 90% Aquaduct-treated merino wool, which enhances moisture absorption and wicks it away from the body. The outer layer also includes 10% silk to ensure maximum durability. The garment features insulating panels with Egga and strategically placed ventilating Wool Mesh. - The hood is carefully shaped to fit the head and prevent heat loss from the neck. - The high collar can be pulled over the nose, with breathing holes to enhance moisture transport away from the face in extremely low temperatures. - Thumbhole wrist warmers. - Aquaduct treatment provides superior moisture-wicking properties. - Total Easy Care Merino wool: machine washable and tumble dry safe.