Description: It can help you correct bad posture and straighten your back because it is designed with back X-shaped reinforcement. What makes it stable and comfortable to wear is the ergonomic design. The buckle design makes it easy to adjust and convenient for lactation. Widened shoulder straps can relieve shoulder pressure and effectively prevent chest sagging. It is constructed of gauze material. There are 4 sizes for you to choose from: S, M, L, XL. It is suitable for sports, running, cycling and daily life so on. Item Name: Back Correction Belt Material: Gauze Features: Breathable, Adjustable, Soft Functions: Support Back, Improve Posture, Straighten Shoulders Size Details: Size: S, Under Bust: 60cm-73cm/23.6"-28.7", Waist: 64cm-74cm/25.2"-29.1" (Approx.) Size: M, Under Bust: 73cm-80cm/28.7"-31.5", Waist: 75cm-80cm/29.5"-31.5" (Approx.) Size: L, Under Bust: 80cm-87cm/31.5"-34.3", Waist: 80cm-85cm/31.5"-33.5" (Approx.) Size: XL, Under Bust: 87cm-93cm/34.3"-36.6", Waist: 85cm-93cm/33.5"-36.6" (Approx.) Notes: Please refer to our size chart and choose the right size. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Package Includes: 1 x Back Correction Belt