3.5 x 7" Premium Coffee Bags with Valve

The Bags are made of Matte MOPP+VMPET+PE aluminum foil+food-grade PE,Three-tier design make it stronger, block light, keeps coffee from odor or moisture,ensure the taste of coffee or powder in the bag, and can also be transported over long distances. Operation Instructions: 1.Put the items to be stored 2.Must use sealing machine(not include) 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. 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. 3.5 × 7+ 1.97" (9×18+5cm),volume of 125g,double-sided thickness of 28 wires,aluminum foil flat bottom reusable side zipper coffee bags with one-way air valve.