If you are standing or are inactive for long periods of time your legs can become swollen and painful revitive cx is a class 2a medical device which has been developed and tested by researchers at leading uk universities and is designed tobull increase lower leg circulationbull reduce swollen feet and anklesbull alleviate pain and discomfortbull help cold feetbull increase oxygenated blood in the feet and calves helping you recover quicker from inactiv