Deluxe 1.65 mil Nature Flex Cello bags are made from wood cellulose fibers sourced with sustainable forestry principles. Certified biodegradable, compostable and made carbon zero. Meets ASTM D6400, EN13432 standards for CA and other states. Meets FDA requirements for direct food contact. Heat sealable.3-1/2x2-1/4x10-3/4" Bag.Uncoated cardboard insert helps bag to stand up straight