This video demonstrates lacing on overbands of a Spanish style model of a medieval stationery binding. These books were used for writing in, such as record keeping and accounting. The bands are the wide strips of leather that wrap around the spine of the book. This protects and reinforces the spine of the book. While the bands were usually attached with adhesive, because of the heavy use these books got, the lacing ensured the bands stayed in place. The lacing was parchment, leather or alum tawed skin. While the banding and lacing had a function, it was obviously done to be decorative.