Canadian Lumber All Natural Hemp Papers are made from 100% unrefined and unbleached hemp. The papers are so unrefined it is easy to see the raw hemp fibres still intact. Canadian Lumber created The Greens for many reasons, one is the hemp plant naturally holds moisture making The Greens Canadian Lumber's slowest burning paper. The unrefined fibres help even out the burn for a naturally perfect burn. Canadian Lumber rolling papers are 100% all-natural including the Arabic Gum seal. The Arabic Gum is similar to tree sap and comes from a conflict-free company in West Africa. All of our papers are tested by Guelph University and the results are published on our website. Canadian Lumber products also are SUD Certified which is the European product standardized testing.