Arc'teryx Satoro AR Crew LS Men's 81% Merino wool, 12% nylon, 7% elastane Imported SATORO AR CREW LS - A midweight Merino wool baselayer crew designed for prolonged all-round backcountry use, the Satoro AR leverages the advanced fabric technology of Nucliex STR 180 wool. ALL ROUND - High performance weather protection and materials, emphasizing versatility for multiple activities. ARC'TERYX ESSENTIALS - Versatile high performance designs for diverse activities and conditions. NATURAL FIBRE - Textiles made from natural fibres provide inherent benefits and next-to-skin comfort. SATORO - Merino wool base layers with natural anti-odour control. Long wearing comfort.