The Medline EMS Knee Length Anti-Embolism Stockings, Knee Length, Long, Latex Free, are a tailored, contoured fit with just the right amount of gradient pressure Pressure greatest at the ankle and gradually reduces throughout length of the leg (15-18mmHg) Made of 80% nylon and 20% spandex Measuring tapes included in each bag as well as loose in each box Color-coded toe and top band to denote size and length Sizes Small - XXX-Large; short, regular and long Box of 12 Pairs