over all this is a good product. i have a small room in my house to workout in and this fits well. you get to have more options than you would with just a reg ab roller. the only thing that i don't like about it is the straps for your feet need to be a little longer. im not a big guy onlky about 6' tall and i have trouble getting the straps to go over my feet. also once you get your feet strapped in the back straps don't like to stay on, and it is awkward rolling onto your belly to use the feet. other wise the workouts are great