Therafirm® Thigh High 30-40 mmHg, Open ToeThe Therafirm 30 40 mmHg Open Toe Thigh High Compression Stockings are designed to improve circulation, relieve tired, heavy, aching legs, and prevent moderate swelling. FEATURES 30 40 mmHg (the mean compression for an average ankle size) Fashionable semi opaque knit Soft comfort band is non restrictive while staying in place all day Open toe allows toes more wiggle room Two way stretch nylon and spandex blend Patented Micro Cool process wicks away