The IsoCool Mens Walker Socks are warm and comfortable. Made in a wool/acrylic blend, they're also highly breathable and quick-wicking with fine toe seams - great value socks for walking and hiking. Wool & Acrylic blend - 35% Wool, 52% Acrylic, 12% Nylon, 1% ElastaneIsoCool - our IsoCool fabric is quick dry, highly breathable and wicks away perspiration from the body to keep you coolFine toe seams - help prevent chafing and provides extra comfort