1. High barrier material with food - Made of matt BOPPPETaluminum foil and food grade PE. Four-tier design makes a thickness of 150 microns which means much stronger than others, High barrier material keeps coffee beans from odor or moisture, ensuring the freshness of coffee or powder in the bag and longer shelve life. 2. One-way degassing valves release the pressure of trapped air and gas while preventing outside air from entering the bag. Whether your roasted coffee is smooth and balanced or bold and fuller-bodied, your brewed cup is fresh every time. Thick Moisture-proof Inner can protect the food from moisture and odor, fit for long-time food preservation. 3. Top material, perfect printing color, and professional crafting make an ideal commercial bag which will surely aid your business and enhance your brand. Our bag is not only for coffee, but also perfect for other nut, snacks, handmade food and so on. It's a very handy and reliable package for gift or selling. 4. Size: width 5.3 x height 10 x bottom side gusset 3 (13.5cm ¡Á 25.5cm x 7.8cm). Capacity: 16oz1lb500g. The capacity could be different depending on the content. Quantity: 50 Pieces