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 % polyamide to improve durability. Devold® Expedition insulates extremely well and has a unique ability to transport moisture. The Aquaduct Merino wool is specifically designed to move moisture away from the skin side of the fabric to the outer surface where it evaporates. Technical Specification Weight 235 g/m2Material 100% Merino wool/90% Merino wool / 10% PolyamideFiber Fine: 18.7 micron Arthur Beale says Since it looks like face coverings are here to stay, why not invest in one of our brilliant Devold Merino Wool Headovers. They are great for all sorts of outdoor activities including cycling, skiing and sailing, but we are finding them particularly useful at the moment as snood face coverings. They are light enough to be worn around the neck all day comfortably and can easily be pulled up snug over the nose when you pop into Sainsbury’s! Stay warm and safe at the same time.