The arched back stretcher is a simple, yet effective tool for stretching the back. It consists of a small, curved piece of plastic that fits under the back and two handles that extend from the sides. To use the device, simply place it on the floor and lie down on your back with your feet flat on the ground. Then, holding onto the handles, use your legs to slowly raise your back off the ground. The further you raise your back, the greater the stretch. You should feel a gentle pull in your back and buttocks. The back arch stretch device is an easy way to stretch the back muscles and improve flexibility.