Size: M [Weight 30-55 catties], Quantity: 1This children's posture correction belt is designed primarily for children and adolescents to help them avoid poor sitting posture. It is also suitable for petite adult women. It helps correct back and shoulder posture and prevents forward curvature of the spine. It helps change children's bad hunching habits, encourages them to develop good back posture, and prevents nearsightedness. Made of high-quality materials. Breathable mesh fabric is non-sufficient. Two metal splints embedded in the fabric provide effective back support. The front Velcro strap widens and expands to prevent abdominal compression and maintains strong adhesion. It allows for extended use and is freely adjustable for added comfort. This children's posture correction belt can be used in a variety of environments and can be concealed under clothing; it is convenient, reliable, and trustworthy. Wear it for 1-2 hours daily to straighten your back. As your child gets used to using this children's back support belt, the back straightening function will develop muscle memory, meaning they can maintain a straight back even without a posture correction device.Note: 1. Due to different monitors and lighting effects, the actual color may vary slightly from the image.2. Due to manual measurement, please allow 1-3 cm deviation.