Compression Stockings Circumference Ankle 8 - 9.5 Inch, Calf 11.5 - 15.5 Inch, To 17 Inch Calf Length Color Black Compression Rating 20-30 mmHg Material 80\% Nylon / 20\% Spandex Size Medium Style Knee-high Toe Style Closed Toe UNSPSC Code 42142802 User Unisex Two way stretch design provides extra comfort Graduated compression aids blood circulation Extra firm surgical weight Relieves tired, aching and swollen legs, often symptoms of varicose veins