1.Material Our resealable mylar bags are made of polyethylene, aluminum foil and mylar, it has tear resistance and durability. 106% food grade material, nontoxic and tasteless, can be directly used in food packaging. 2.ColorFoil zip lock bags come with White,Blue,Red,Purple,Black,Green,Gray,Pink,Gold color in the back and transparent in the front in to display the product clearly.You can choose the color you like. 3.UsageSmell proof bags for can be used to store whole grains, tea, coffee, dried seafood, candy, snacks, nuts, stationery, jewelry, hair accessories, makeup brush tools, electronic product parts. The transparent window on the front of the bag clearly displays the items. These delicate bags are also for wrapping gifts. It is suitable for home, school and office, small business using. 4.AdvantagesThe sealing groove of the packaging adopts the concaveconvex pulling bone design, the bite is tight, Keeping items dry, prevent food from going stale, dustproof and moistureproof,and it can be used repeatedly. Resealable ziplock bag are easy to seal and save your effort.