Dickies 3-Pair Men's Black Industrial Strength Crew Work Socks - All Sizes 80% cotton Stay up top. Full cushion foot. Full reinforced sole. Package contains three pairs (six socks total). Size 6-12: 82% cotton / 14% polyester / 3% nylon / 1% spandex. Size 12-15: 80% cotton / 16% polyester / 3% nylon / 1% spandex.