Welcome to Our Store: QBYVQQN Specification: Magnetic Back Brace: Our back support brace has 12 built-in magnets on the upper and lower back to promote and relieve fatigue and pain. Safe Comfortable Fabric: high-quality, breathable and soft fabric, comfortable and skin-friendly, suitable for long-term wearing in four seasons, and will not cause hurt to your skin. Adjustable Size: Back posture corrector has two adjustable straps and velcro beltis, allow you to adjust tightness accordingly. Ergonomic Design: The posture corrector can be worn under the clothes, even if you wear the back posture corrector in the office, it will not be embarrassing. Our back brace can train your posture and develop muscle memory. You get an improved pose that can make you look taller and slimmer. Function: Improve high and low shoulders Get rid of shoulder or neck pain Improve hunchback Reduce back and spinal pain Great for thoracic outlet syndrome Better Physical Performance Less Stress and Muscle Tension Size: Small: chest circumferences between 29 to 33 inch, waist 25 to 33 inch Medium: chest circumferences between 33 to 37 inch, waist 33 to 41 inch Large: chest circumferences between 37 to 41 inch, waist 37 to 45 inch Warm tips: For best results wear your brace for 20-40 minutes per day for the first week. Then add 20 minutes more every day and increase to 2 hour a day. It can be worn when watching TV, work on computer and learning. Package included: posture corrector magnetic * 1Easy to Wear: Whether you're at home, work, or on-the-go, our upper back brace is easy to wear and adjust for maximum comfort. The posture support is thin and light enough to wear under clothes and will not be noticed even though you wear this posture brace under shirt or blouse while working or doing daily activities. So you don't worry about bad impression with our back brace. Adjustable Size: Back posture corrector has two adjustable straps and velcro belts, allow you to adjust tightness accordingly. The back straightener has multiple under-bust sizes to choose: fits chest circumferences between 37 to 41 inches, waist 37 to 45 inches. Health Improvement: The posture corrector supports for improve the Hunchback, Bad Posture, Spinal Support, Back & Neck Pain Relief for Women and Men. Our back brace can train your posture and develop muscle memory. You get an improved pose that can make you look taller and slimmer. Comfortable to Wear: The back straightener is made from lightweight, breathable materials, suitable for long-term wearing in four seasons which won't hurt your skin. Magnetic Back Brace: The back support brace contains 12 magnets massage the back and waist, promotes blood circulation to alleviate fatigue and eliminates back, shoulder pain and muscle stress. This back brace for posture is a great entry point into a good, healthy posture for those looking to try a new back support device.