Arc'teryx Satoro AR Zip Neck LS Men's 3" high 7" wide SATORO AR ZIP NECK SHIRT LS - A mens midweight Merino wool base layer designed for prolonged backcountry use, Satoro AR Zip Neck leverages the advanced fabric technology of Nucliex STR 180 wool. ALL ROUND - High performance weather protection and materials, emphasizing versatility for multiple activities. ARC'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.