Devold Expedition is an underwear garment designed with dual layers for extreme weather conditions. Proven on several polar expeditions. The inner layer is made of 100 % Merino wool, while the outer layer is 90 % Aquaduct treated Merino wool, combined with 10 % silki to improve durability and softness. Devold® Expedition insulates extremely well and has a unique ability to transport moisture. Wide and comfortable elasticated waist. Flat seams for optimal comfort. Double cuffs for extra shape stability. Total Easy Care Merino wool: machine wash and tumble dry.