1. Stand up, zipper lock, heat sealable, resealable, reusable, with tear notch 2. Easy printing or labeling 3. Perfect for packing food, coffee beans, nuts, candy, cookie, etc. Notes 1) As manual measurement, please allow the size of the item be a small range error 2) Please confirm the size before you place an order, 1 inch=2.54cm Outside Size: 18x26cm (7.1x10.2 inch); Usable Size: 16.5x19cm (6.5x7.48 inch) Material: Back Aluminum Foil & Front Plastic Quantity : 50 Pieces; Thickness: 0.07 mm/side (2.75 mil) Feature: Zipper lock, stand up, heat sealable, resealable, reusable, with tear notches Perfect for packing dry food, coffee beans, nuts, candy, cookie, etc.