Not a bad product overall, provided they're bought purely for novelty value (they are vibrating slippers after all). I find that, because there's no back, my heels get cold and the slippers tend to shoot off if I walk downstairs in them, must be something to do with the pressure on different bits when on stairs. They also do a funny flip-flop thing too, again, furry flip-flops are an entertaining novelty but not practical. The vibrating action isn't entirely convincing and does make a noise, but again, when treated as a novelty, it's quite entertaining.