Celeste Stein CMPS2 20-30 mmHg Athletic Compression Sock; Pink & Black - Medium FeaturesAchilles Tendon ProtectionArch Support BandCMPS2 20-30 mmHg Athletic Compression SockSpecificationsColor: Pink & BlackSize: MediumDimension: 4" H x 4" W x 4" LWeight: 2 lbs Built with the greatest support at the ankle that reduces gradually up the leg, they work to reduce the diameter of the superficial veins in the lower leg and thus help improve blood flow..