Premium Materials: Our holographic zipper bags are made of food grade materials (aluminum and mylar), which are eco-friendly, reliable, odorless and safe to use. In addition, they are thick and resistant. They are harder to tear than ordinary plastic bags and last longer. The + product: The anti-odor mylar bag is airtight. With airtight zipper to keep out air, water, moisture, dust and odors. Each pouch has two tear-off slots. They can be heat sealed. They are perfect for easily storing liquids and food. Beautiful packaging and practical design: one side of each pouch is lightfast and beautiful in color, while the other side is transparent in a beautiful holographic style, giving off a rainbow glow, making it easy to see the product without opening the bag. Resealable and reusable after a simple wash. It is ideal for storing and sorting various items. Versatile: Use zipper bags for daily storage, packaging, shipping, sampling or sorting is very convenient. Can put dried fruits, coffee beans, candies, spices, cookies, tea, nuts, cereals, feed, condiments, jewelry, cosmetics, samples, etc.Bulk & Custom: We offer Mylar bags in different colors and sizes to meet your different needs. Please feel free to message us if you would like bulk or custom/personalized pouches.