Upper Back Brace: Posture corrector adopts ergonomic 8-shaped design to perfectly fit the spine and pull it straight. It helps with effortless bad posture correction, effectively relieve back pressure, and improve your posture. Especially for kids | Vibration Function: The latest back correction with vibration has a massage effect on the back. All strengths are concentrated on the back. Just 2 hours a day, and you'll feel confident to reshape your figure | Stretchable & Breathable: Back straightener, made from resilient nylon, is more comfortable, it can be adjusted to accommodate all sizes of bust, and allow your sweat to freely go through to maintain coolness | Long-lasting Use: Posture Trainer with a high-precision chip and 500mAh large-capacity battery is specially used to improve your using experience. Suitable for women, men and young groups | Enjoy A Comfortable Life: Brace posture corrector aims to relieve chronic back discomfort and make long working or standing hours a breeze to get through. By aligning properly your posture, it takes pressure off of key areas, thus relaxing back, neck and shoulder