Dust wrapper

Dust

the paper, often with illustrations and information about the book, used as a protective covering over the book; sometimes called a dust jacket.

Danish: Beskyttelsesomslag
Dutch: Boekomslag, stofomslag
French: Jaquette
German: Schutzumschlag
Italian: Sovracoperta
Spanish: Sobrecubierta
Swedish: Skyddsomslag