Features: 2 S-shaped lightweight stays that are approximately 1.7 times thicker than our previous products and have an increased strength of approximately 2 times. Uses a strong rubber material and a supplementary belt for added compression. Hard mesh material for the front and back arm. The auxiliary belt connection rubber and front loops are added to make it easy to put on. The length of the back part is approximately 7.9 inches (20 cm). The compact design allows for easy movement even when worn.