Fits perfect 9! I also dont want a machine taking up room in my house all the time. Very convenient for virtual meetings. Love that its easy to see/read. If you put it on wrong or break it, dont blame anybody but yourself buddy. The charging case is great for both transport and keeping them charged in between uses. My wife just gave birth and she constantly trains and wear a trainers waist belt but it didnt really help that much until she tried this hot shaper belt! Be the end of three weeks, I was walking out of them. This review is for my three moth old pair of the same. My voluptuous feet were hanging off the side and shoes were squeezing the life out of my little piglet!