RAW Classic Creaseless Paper for smoother burning was made for the true purist! These flat, creaseless packs are the original style of rolling papers that even pre-date interleaving! They're the same today as they were 100+ years ago. Perfectly made from unbleached plant fibers and finished with our purest natural gum with NO preservatives, a slight curl may appear at the gumline in low humidity naturally. If they curl just hold the sheet taught and blow warm air onto the gumline and that should straighten them right out. RAW paper is made from natural plants with zero burn additives.