Why You choose Our Mylar BagsOur mylar bags have a matte black smooth texture, metallic mylar and foil material, which is durable, resealable, keep all water out and resistance to tearSmell proof bags: convenient to use with nice proof quality, helpful to keep water and dust, save your effort, keep things organized and cleanThe black mylar bags are suitable for coffee, beans, candy, sugar, rice, baking, cookies, tea, nuts, dried flowers, dried fruit, powder, snack and more food long term storage Also can hold pill, lip gloss, mask, vitamins, medicine or decorations, electronic components etcSpecification: Material: Metallic Mylar and Aluminum Foil Size: 14 x 20 cm55 x 78 inches Thickness: 36 mil009 mm Qty: 100 PiecesNote: Please allow little size errors due to manual measurement Please pay attention to the size before placing the order