XIXI Unisex Back Waist Posture Corrector Adjustable Adult Correction Belt Waist Trainer Shoulder Waist Support Spine Support Belt Vest (1) Made of comfortable and breathable cotton material, buckles and tapes; (2) Special eight-open design, easy to adjust the tightness; (3) Easy to wear, comfortable and breathable; (4) Effective for medial fractures. how to use: Pull the straps over your shoulders, making sure the elastic is closest to your body. Stretch the waistband around the torso and tie. Adjust position and comfort as needed. The straps should be pulled back slightly at the shoulders. If needed, pull down the waistband slightly to increase shoulder pressure. Colour: Black Size: XL Quantity shipped: 1 piece