Cooplus classic athletic sock -Suitable for Casual/dress/sport/running/work/athletic shoes -Moisture - wicking -Mesh ventilation -Arch support -Cushioned sole Package Includes: 6 Pairs Socks and Shipped by FBA. Washing Instruction: Machine Wash & Hand Wash(Suggest using wash bag). Tumble Dry & Air Dry. Don t iron. Don t bleach. Don t soak socks in hot water or suds for a long time. If you encounter any problems please contact us we will help you to solve within 24 hours. Your satisfaction is our eternal pursuit.