12 - 14 mmHg Graduated Compression with superior fit. Comfortable welt top band fits up to 22" calf. Helps to increase circulation and prevent swelling. Standard ladies sock size 9-11 fits most. 12-14 mmHg Graduated Compression helps improve circulation and relieve leg fatigue. 87% Nylon, 13% Spandex Comfortable Heel and Toe Pocket doesn't pinch.