Foil Stand Up Pouches come with a convenience tear notch. While a zip lock is an option on our 1oz and 2oz sizes, the zip lock is standard starting with our 4oz size and up. Sticking front and back labels are made easy due to the flat surface. We also have options of one-side clear so your customers can view product instantly!FEATURES:Variety of Sizes Composition Structure:?Color Foil - PET/FOIL/LLDPE - 5.4milKraft Paper - KRAFT/FOIL/LLDPE - 5.6milTwo-Sided Material - Poly Side: PET/LLDPE - 5.2mil / Foil Side: PET/FOIL/LLDPE - 5.4milWith zipper; 1oz and 2oz have the option of no zipperWith or without one way degassing valve