What is a saddle stitch binding?

Saddle stitching is a binding technique where folded and nested pages are stapled together along the fold line, typically at the center of the publication. This results in two staples in the spine of the publication, holding the pages together. Saddle stitching is commonly used for booklets, magazines, and catalogs with lower page counts. It is a cost-effective binding method that allows the pages to lay flat and be easily read, but is not suitable for thicker publications as it may cause the pages to bulge or the spine to weaken.