A rolling paper is a thin piece of paper used to envelop ground-up cannabis flower into a joint. Most rolling papers are made out of wood pulp like regular paper, but they can also be made out of hemp, rice, and flax. Rolling papers come in different sizes, such as singles, 1 ¼, 1 ½, wide, king, etc., and can also be infused with flavors, e.g., grape, cherry, chocolate, etc. They are generally sold in cardboard packs.