Dickies Men's 2 Pack All Season Merino Wool Light Cushion Crew Socks 42% Acrylic, 24% Nylon, 19% Merino Wool, 10% Polyester, 5% Spandex Imported Machine Wash Temperature regulating merino wool blend keeps feet comfortable year round Moisture control fibers keep feet dry Ventilation channels engineered for air circulation and moisture control Lighter weight leg construction perfect for year round comfort Half cushion, zone cushioning through foot provides non-bulky