Arc'teryx Bird Head Toque BIRD HEAD TOQUE - Super Fine 50/50 Merino Wool acrylic blend with a soft, thermal fleece underbanding, and six dart construction. 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. SYNTHETIC FIBRE - Engineered materials that offer enhanced properties or performance.