- Self Fold Cardboard Protector: Made of paper, environment-friendly, light and easy to carry, won't scratch your precious photos and paintings, and you can recycle them to use many time. It is easy to be removed and reused. Wide Application: Prevent art photo from being damaged when transporting to art shows, galleries, festival or your customers. Protect your precious painting, picture frame and photo frame when being shipped, move, displayed or stored.