Construction work needs tough heavy-duty vehicles. Therefore you need these socks to prove just how tough you are. MADE FROM 85% Cotton, 10% Polyester, 5% Spandex CARE INSTRUCTIONS Machine wash, cold (30 ℃ / 86 ℉). Do not bleach or iron. To reduce damage and if you're feeling very fancy, line dry. They will last longer if you keep them out of the tumble dryer. Eat well. Exercise. Have an amazing day.