- Automatic memory function: ergonomic design for easy on and off. The posture corrector includes an automatic memory function to help you develop daily posture awareness and correction exercises. - Long battery life: after full charging, the back straightener can work for 7 days or more. When worn for 1-2 hours a day, most users develop muscle memory, helping you stay upright in 1-2 months. - Comfortable to wear: posture trainer is made of silicone material, lightweight and durable, soft and skin-friendly and not easily deformable. Adapts to the curves of the body and is comfortable to wear. Suitable for children, teenagers and adults. - Lightweight and portable: the back smoother is small and lightweight, easy to hold in the hand and can be stored in the room or taken to school or travel. Put it in your bag and take it anywhere. Use scenarios - At a desk or during study or work: wear to support upright posture while typing, reading, or using a screen. - On the go: ideal for school, commuting, or travel to encourage and maintain proper posture throughout daily activities. - Daily routine and family use: suitable for children, teenagers and adults to develop consistent posture habits over time.