Rust is a common problem for sleeping bags, especially if they are not properly cared for. Rust can damage the fabric of the sleeping bag, making it less effective at keeping you warm. It can also cause the sleeping bag to become uncomfortable to use. There are a few things you can do to prevent rust from forming on your sleeping bag, and to remove rust if it does occur.
To prevent rust, make sure to keep your sleeping bag dry. If it gets wet, dry it thoroughly before storing it. You should also store your sleeping bag in a cool, dry place. Avoid storing it in a damp basement or attic. If you are going to be storing your sleeping bag for a long period of time, consider putting it in a storage bag that is designed to protect it from moisture.