. The sheets may be made of rice straw, wood pulp, or flax, and can be used to either hand-roll or machine-roll . Typically folded inside a cardboard wrapper, rolling papers come in different dimensions, generally between 70 to 110 millimeters long, and may be flavored to enhance the taste experience of terpenes. Some flavored rolling paper varieties include blueberry, double chocolate, grape, and pineapple.