SMEAD Side Opening Pressboard Report Cover, Prong Fastener, Letter, Bright Red (SMD81251) Two-piece style cover with matching Tyvek hinge compresses material tightly to reduce bulk. Designed to hold securely without damaging the document or binder hinge. Durable matching Tyvek hinge. Prong fastener holds securely without damaging the document or binder hinge. This product was made from wood that came from a certified managed forest.