Review (4/5): AMENDED REVIEW
The first one I received did not work and I was pretty disappointed. The seller was extremely helpful and refunded my money as well as immediately sending me a replacement free of charge. I was skeptical but have found it to be an effective tool to smooth out calluses and such on my feet. Exercise a little patience and a take a few minutes for yourself when you can, and roll away! (Be careful not to apply too much pressure, it will temporarily stop - a gentle pressure is all you need) I massage some foot cream or coconut oil into my feet afterwards and after three "sessions" my feet are looking pretty darn good!