SYOSI Coffee Storage, Coffee Bags with Valve Black High Barrier Aluminum Foil Flat Bottom Standing Coffee Beans Storage Bags, Reusable Heat Sealable Side Zipper Pouches for Home or Store (20pcs,8 oz,1/2 lb)

Product Description One-way air valve After the coffee is roasted, CO2 is generated. The one-way air valve can exhaust the CO2 inside the bag while preventing external gas and water from entering, keeping the coffee fresh； At the same time it can hold fresh coffee beans Food Grade Composite Material 1. Outer layer: light matte film improves the texture and grade of the bag 2. Middle layer: PET aluminum foil has the function of isolating O2 and preventing moisture 3. Inner layer: PE film can protect the product from pollution and corrosion during transportation, storage, and use. 4. Thickness:The thickness of the bag is 6mil(Double layer 12mil) Suitable for Home and Business Whether it is used in a family store or a commercial store, you can affix your own label to record, distinguish or show to customers Humanized Design 1.T-side zipper easy to tear and open bag 2. The eight-sided sealing round design will not scratch your hands, and improve the sealing performance 3.Flat bottom coffee bags can hold more Size and Quantity:20 pcs,7.9×5.1+2.9inch (20×12.9+7.3cm), the volume of 8oz/0.5lb/250g, the double-sided thickness of 32 wires, aluminum foil flat bottom reusable side zipper coffee bags with one-way air valve Keep Coffee Beans Fresh: The one-way air valve keeps the coffee beans and roasted coffee fresh. Excess gas flows from the inside to the outside without returning gas, keeping food fresh Food Safety Material: Matte BOPP+PET aluminum foil+food-grade PE, Three-tier design makes it stronger, blocks light, keeps coffee from odor or moisture, ensures the taste of coffee or powder in the bag, and can also be transported over long distances Functions: Household: 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 Operation Instructions: 1. Put the items to be stored 2. Must use a sealing machine(not included) to seal the top of the bag（occasionally not completely sealed, can turn the bag over, heat seal again） 3. Squeeze out the air from the bag through the degassing valve