I'm a pediatric nurse and am on my feet for 12 plus hours. I purchased this machine to soothe my poor aching feet. I opened the package with great expectations. Unfortunately, I was very disappointed. If even the smallest pressure is put on the machine, it wimps out....no massage, no nothing! I have had much better foot rubs with the manual kind! This machine is a total waste of money in my opinion. I used it twice and it did nothing for my aching feet. You'd be better off spending the money on a reflexologist. Seriously!