I love it, I use my treadmill, I use it at least 4 times a week and it keeps me in shape and healthy. Its my reading time, of course I use the treadmill waist belt. Which by the way was very difficult to get as I couldn't find it anywhere. Now it has its own website! and I see they are selling it in Amazon as well, I send it as gift to anyone I know with a treadmill and they like it as well. I have it for over 10 yrs, and it helps me do just anything without falling back so I don't feel I'm 'losing time" while I'm there.