Softcover Perfect Bound: The industry term for traditional paperback binding, Perfect Bound is the most cost-efficient and popular way to bind on-demand products. Suitable for most projects.Softcover Coil Bound: A flexible, black plastic coil allows the book to lie flat. Coil Bound is great for music books, notebooks, agendas, and any other project meant for display.Softcover Saddle Stitch: Interior pages are folded and inserted between the cover, then stapled along the “spine” edge. Saddle Stitch binding is recommended for interiors with 48 or fewer pages. Great for supplementary materials, coloring books, and other smaller projects.Hardcover Casewrap: Traditional hardcover binding with the cover image printed on the cover. Casewrap binding is most often used for textbooks and hardcover portfolios.Hardcover Linen with Dust Jacket: Hardcover book with cotton-poly blend linen, featuring a protective acrylic coating wrapped around the cover boards. This book also comes with a premium color dust jacket. Seen on novels, memoirs, albums, and other polished projects.Calendar Wire-O: The Wire-O binding is used exclusively for calendars to create a durable calendar that can easily be flipped without scratching or twisting.