Trulife T39 Hyperextension Orthosis can be adjusted quickly. The pad at the back can be used flat or upright. There's a pad for the chest that can move for comfort. It's easy to put on & take off with a latch-lock clamp. You can get it in regular or short sizes. It can fit medium to large sizes & can be adjusted for height. The pads can be taken off and washed. It's also called a "Jewett brace."