Ladies' Sheer Firm Support Sm 20 30mmHg Knee Highs Black Beds Accessories Accepted by leading authorities as Undercast Padding Accepted by leading authorities as a simple and accurate method for discovering congenital color blindness and red green blindness each in two forms complete and incomplete * Includes four special plates for tests to determine the kind and degree of defect in color vision * Makes use of the peculiarity that in red green blindness blue and yellow appear remarkably bright compared with red and green * Color plates encased in specially designed album type books for ease of handling * Detailed instructions included Knee High (Open Toe) * Black * 20 30 mmhg * Small * Ankle Circ Blue Jay Brand * Closed Toe* Graduated compression helps shape up legs * Physician recommended * Relieves tired aching and swollen legs mild varicosities and edema * Effective as post sclerotherapy treatment * Fiber content: Nylon (80%) Spandex (20%) * Fashionable sheer appearance for work or leisure * Two way stretch design provides extra comfort * Reciprocated heel and toe * Comfortable non binding top * HCPC CODE: N A