I was very dismayed when my old leg massager quit working, but it turned out to be a blessing! These are easier to put on and work much better. My Psoriatic Arthritis is really bad right now, and walking is difficult. Very tight muscles pulling on the knees make them weak and painful. These leg massagers really do massage the legs with changeable action. I've used them only three times, but there is, already, a tremendous difference in blood circulation. My feet and lower legs aren't so cold. The muscles have relaxed enough that my knees and legs aren't so painful. Walking is still difficult, but I'm expecting more strength and stability as the muscle tension relaxes. These leg massagers were a great purchase - a great help in time of need. Yes, they're expensive, but the cost of pain killers I won't buy will cover that in time.