Welcome to our shop! This product comes with a chest pad and does not have steel support. The fabric composition is polyester (polyester). Please note that the product does not include a steel trailer. Delivery includes the detailed item description and the specified quantity. Note:1. Please allow small size error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.(Customer satisfaction is our top priority. If you find any product problems after receiving the goods, such as damage or incorrect quantity, please contact us immediately. We will try our best to provide you with satisfactory after sales service)Thank you for meeting me.I hope this helps you.Wish you a happy life.