Feetures Elite Light Cushion No Show Tab Single Wool The PerfectToe (No irritating toe seam.) Merino+ fibers wick moisture to keep feet dry and odor-free. Merino+ insulates when wet keeping your feet warm in wet, cool conditions. High-density cushioning provides extra protection in high impact areas. 37% Rayon from Bamboo, 34% Wool, 26% Nylon, 3% Lycra Spandex