Women especially wore the girdle book out of convenience since it was already fashionable, at least in the 15th century, to wear a girdle belt above the waistline. A book secured on the girdle belt served both the utilitarian function of enabling hands-free carrying and protecting valuable books from theft and the elements. It also made a visible statement of social position, wealth and learning (or at least literacy). Authoritative figures, saints or apostles like St. Jerome were often depicted holding girdle books. Girdle books also appeared to be a fashionable accessory for lay women. Artistic depictions of the girdle book confirm their popularity as an accessory.