The Lightweight Posture Trainer is a minimalist shoulder harness designed to encourage a more upright upper-body position during low-movement daily activities such as desk work, standing, or walking. Its flexible, low-profile construction applies gentle backward tension to the shoulders without rigid panels or bulky structure. Fully adjustable straps allow users to fine-tune fit and tension, making it suitable for short, intentional wear sessions rather than continuous use. This posture trainer is intended for short, intentional wear sessions and works best when used as an awareness aid rather than a rigid brace. It is designed to be worn over clothing and adjusted to moderate tension, helping cue shoulder positioning during light daily activities. Extended wear or high arm movement may reduce comfort depending on fit, so gradual use is recommended for best results. Specifications: Material: Polyester Sizing: M: suitable for body weight 90 - 140 lbs L: suitable for body weight 140 - 200 lbs Weight: 0.11 lbs Usage: Open-shoulder posture support designed for short-duration wear; best worn over clothing