50 Natural Kraft Stand-up Zip Pouch with Window (Large (6 3/4"W x 11 1/2"H)) Built in oval window, zip lock, and tear notch. Pouches are great for packaging and displaying products (e.g. baked goods, confections, coffee, tea, snacks, and much more). Perfect for selling your goods to customers. These pouches are made with Kraft Paper (KRAFT), Aluminum Foil (FOIL), and Linear Low Density Polyethylene (LLDPE). Provides barrier protection against moisture and oxygen Available Pouch Sizes: SMALL: 5.125" (Width) x 8.125" (Height) , MEDIUM: 5.875" (Width) x 9.00" (Height) , LARGE: 6.750" (Width) x 11.50" (Height); Individual Pouch Thickness: 4.4 mil These stand-up zip pouches are heat sealable.