The Devold Expedition Merino Shirt is a two-layer wool underwear designed for extreme weather conditions and tested on several polar expeditions. The inside is made of 100% soft merino wool, while the outside is made of 90% Aquaduct-treated merino wool. The Aquaduct treatment of the outer layer improves moisture absorption from the body and ensures that moisture evaporates quickly, keeping you dry. We also use 10% polyamide in the outer layer to increase durability and ensure that the garment can withstand even the toughest expeditions. Expedition wool base layers offer exceptional insulation and unique moisture-wicking properties, making them the solution for the coldest days—whether you're a polar explorer or not. - Double cuffs for extra shape retention. - Extended back section. - Flat seams for optimal comfort. - Raglan sleeves for greater freedom of movement. - Wrist cuffs with thumb holes. - Total Easy Care merino wool: machine washable and tumble dryable. - Aquaduct treatment ensures excellent moisture-wicking properties.