Therafirm® Core-Spun Thigh High 15-20 mmHgThe Core Spun 15 20 mmHg Thigh High Compression Socks are designed to improve circulation, prevent mild swelling, and relieve tired, achy legs and feet. FEATURES 15 20 mmHg (the mean compression for an average ankle size) Ultra stretchy yarns make the sock easier to put on Moisture wicking fibers Comfort designed top is non restrictive while staying in place all day Reinforced, comfortable heel and toe Designed to help prevent edema, leg discomfort,