EMS Anti-Embolism Stockings are made of 80% nylon and 20% spandex for strength and stretch and provide a tailored, contoured fit with just the right amount of gradient pressure to optimize patient comfort; the pressure is greatest at the ankle and gradually reduces throughout the length of the leg (15-18 mmHg). Color coding at the toe and top band denote size and length for quick identification, and a measuring tape is included in each bag as well as in each box for help in finding the right fit.