Zipper design can make the bag sealed can save your food better. And Bottom has a base design make it can stand on the table. The one-way valve can release the gas from coffee beans inside, and will not inhale the ourside gas to keep the coffee beans in good longer. The aluminium foil is dourable and waterproof, Apply to keep coffee beans, nuts, tea, snack…Your logo or artwork can be printed on it. Contact us for more details!