Devold's Expedition lineup is a solid test winner, and this model ups the ante with great detail. This Arctic Pro Hoodie has been developed in cooperation with Borge Ousland. The intergrated, snug hood easily slips under a helmet when needed, helping keep your neck, ears and head warm. The collar extension is perforated for breathing. - Long cuffs with thumb holes - Flat lock seams - The areas most prone for sweating have mesh fabric - The hem is longer at the rear - Two-layer structure: - Inner surface: 100% Merino wool - Outer surface: 95% Merino wool, 5% silk - Material weight 310g/m² - Extra fine Merino wool, 17.5 micron - Machine wash, follow instructions on wash tab Take good care of your Merino apparel - regular detergents are a bit over the top for use with wool, so we recommend using [Nikwax Wool Wash](/wool-wash/), regardless of whether you wash your apparel in a machine or by hand.