Pulling the shoulder blades together and feeling the core Posture Improvement Exercise Belt - Brand: BODY CORE - Product Name: Exercise Belt - Features: Posture correction belt - How to use: Improve posture by pulling the shoulder blades together - Color: Black - Size: L (Armhole approx. 40-50cm) Although it is a new, unused item, there are some scratches on the outer box due to home storage. Thank you for your understanding. ◆ Please refrain from purchasing if you are nervous or looking for a perfect product. I am sorry.