These OCB X-Pert rolling papers are 4mm thinner than a standard king-size rolling paper. This means you smoke less paper and get more of whatever you intend to smoke. There are 32 leaves per pack; each of them is 100% vegetarian and GM-free. Even the printed ink is eco-friendly, and the papers are made from flax plant fibers. OCB has been manufacturing rolling papers in France since 1918.