[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 't 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 tight and 't 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.