[PREMIUM MATERIAL]- resealable mylar bags are made of polyethylene, aluminum foil and mylar, it has tear resistance and durability. [HOLOGRAPHIC RAINBOW COLOR]- foil zipper closure bags come with holographic rainbow color in the back and transparent in the front in order to display the product clearly. When displayed indoors, you ' need to have lots of lighting to see the beautiful rainbow color. [EASY TO USE]- smell proof bags are resealable that you can repeat open the zipper, the sealing strip is very tight and ' broken. Usage recommendation: Pinch both sides of the bag opening with your thumb and finger, and open the bag with both hands.Thumbs are to the zipper, and both hands forcefully open it. [WIDE USES]- holographic bags is waterproof after seal, good to coffee, candy, sugar, rice, baking, cookie, nuts, dried fruit and flowers, , party favor and so on. It is also suitable for small business to package jewelry, eyelash,lip gloss, key chain, cosmetics, soap, electronic accessory or any small objects. [SIZE & ]- Measuring 3 inches by 4.7 inches, 100 pieces of resealable holographic bags in the package, enough for your daily use. note that the actual color may appear in a slight difference under different light,angle and screen. Colour: blue Material: aluminum foil + polyester film Package Contents: 100 * Smell Proof Mylar Bags Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.