1.1. Adjustable shoulder straps, lightweight and durable, soft and skin friendly, comfortable to wear without sweating, in line with human body curves. 2.2. Equipped with high-precision motion chips, real-time monitoring of posture, accurate capture of wearer's posture changes, and timely vibration reminders, scientifically and effectively help you correct unhealthy posture such as hunchback. 3.3. Helps correct incorrect posture in the back and shoulders, improves hunchback, develops correct p