slip case

Noun

 * 1) A removable protective covering for a book etc
 * 2) * 2003 Miriam A. Drake - Encyclopedia of Library and Information Science
 * If a noble book suggests the need of a noble binding, consider a chemise inserted into a tastefully decorated slip case, leaving the book in its original state.
 * If a noble book suggests the need of a noble binding, consider a chemise inserted into a tastefully decorated slip case, leaving the book in its original state.