TUFKnit Youth Merino Wool Blend Outdoor Trail Hiking Socks 4-Pack (4 Pair) 72% Merino Wood/17% Polyester/10% Nylon/1% Spandex Machine wash Warm Cushioned throughout and reinforced from heel to toe for maximum comfort soft merino wool provides natural comfort for all seasons fibers in the foot bottom wicks moisture and maintains cushion smooth toe seam for added comfort