Pölykuori

Pölykuori is a Finnish term that translates to "dust jacket" or "dust cover." In the context of books, it refers to the removable paper cover that wraps around the hard exterior of a hardcover book. The primary function of a pölykuori is to protect the book's cover from damage, such as scratches, scuffs, and dirt. It also serves as a decorative element, often featuring artwork, title, author's name, and publisher information, as well as a synopsis or blurb on the inside flaps.

The design and content of a pölykuori are typically created by the publisher's design team, often in collaboration with the author or editor. The artwork and typography are chosen to be visually appealing and to convey the essence of the book's content. Inside flaps usually provide a brief summary of the story or subject matter, enticing potential readers. They may also include author biographies or promotional information.

While a pölykuori is a common feature of hardcover books, it is not always present on paperback editions, which typically have a more flexible cover material. The pölykuori is designed to be removable, allowing the reader to appreciate the underlying hardcover design or to store the book without the jacket if preferred. Over time, pölykuori have become an integral part of the book publishing industry, contributing significantly to the aesthetic appeal and marketability of hardcover books.