97% Polyester, 3% SpandexImported?? Quality Materials? High quality material makes the athletic socks so breathable, moisture wicking ,quick dry ,comfortable and soft ,snug fitting to wear all day without irritating your feet skin.??Excellent Quality ?Reinforcement in heel and toe provide durability in high stress areas to dramatically in improve product life.Cushion sole provides great comfort and anti blister, reduce sock and foot pain during sports or daily workout activity.??Performance Design? athletic and sport function socks design suitable for home, hiking, running, workout, gym, cycling ,training and other outdoor activities.??Compression Support ? Arch elastic provides added compression support and keeps the socks firm on feet when you wear.Y-shaped heel ensures the ankle socks fit the contours of the foot perfectly to maintain tight and will not slide down.? This pack of 6 pairs : sock size 9-11 /US women shoe size 7-10.5. Machine wash warm with like colors only,Tumble Dry Low, No bleach, iron or dry clean.