The widened side seal makes the package more secure and ensures that the bag will not damage due to the opening. The bubble lining provides a layer of padding that normal laminated envelopes don’ t, which can protect your items well during transportation. Features -Color:Purple -Material:PE, Aluminum Laminated Films -Size:23.50X18.00X1.00cm/9.24X7.07X0.39in - The padded envelopes are lightweight and water-resistant. Lower the of your business and protect your products on the rainy or snowy day. - The bubble mailers come with a self-adhesive seal. Once the envelope has been sealed, it cannot be opened without visible signs of tampering. - The items in the bag cannot be seen, which can protect your privacy well. - Effectively add protection and cushioning by protecting your items from any vibration, scratches and dings. - for mailing cosmetics, jewelry, and bulbs, mobile shell and any other precious goods. Package list: 30 x Bubble Mailers