https://www.forestpac.com/products/matte-white-recyclable-stand-up-pouch.html PE laminations in layers, mono mateial. Reversible EVOH barrier for minimally permissible oxygen levels Reclosable zipper closure for ease of use 100% Virgin Material, 100% Foodgrade Quality There is also a Custom Printed option for the Paperlook Stand Up Pouch with Zipper.All Rights Reserved