I've had lower back injuries throughout the years playing football and was always searching for that piece of equipment to help me strengthen my lower back. I've tried a few back extension machines, every one felt flimsy and not sturdy which didn't allow for a good workout. This machine is truly top notch, used it at a gym and decided I needed one for home. Perfect addition to the home gym, super comfortable to use and easy to adjust for height. Must buy if you're looking for a solid tool to help strengthen your lower back.