Item Type: Posture Corrector_x000D_ Material: Velvet, High Density Sponge, Nylon Webbing 1Posture Corrector: Use upper back brace for supporting clavicle to correct years of poor posture and hunchback, to help you develop correct posture. 2Stable Fixing: By ensuring alignment and stability, you can develop muscle memory and stay straight at all times. Will not fall off easily under your clothes. 3Adjustable Hooks and Clasp: Perfect comfortable adjustment. Just need to adjust corrector through buttons on back and pull to fit your body. 4Suitable People: Designed for chest sizes ranging from 27 to 42 inches. Posture corrector are safe to use. For any scenes, such as office, school, cafe, restaurant, travel, etc. 5Soft and Comfortable: Made of velvet and high density sponge and nylon webbing, which is breathable, will not feel stuffy, and effectively improve back pain caused by poor sitting posture.1 x Posture Corrector