100 pcs flat bottom empty coffee packaging bag.The capacity is 12oz、3/4 lb、375g roasted coffee.Preserve Flavor]: 4-layer (competitor 3-layer) one-way valve extends the storage time of roasted coffee beans by 2-3 months.Materials]The innermost BOPP film and outer aluminum foil not only meets ISO grade standards, but also ensures the flavor of coffee beans well.Sealing style] This coffee bag needs to be sealed with a heat sealer.Just ordinary household sealing machine.The sealed zipper design allows the bag to be reused Home: Not only to ensure that the coffee is fresh, but also to store other nut snacks and so on; Commercial: You can attach your own brand label on the surface as a retail or sample display package