As the name suggests, A7 mailer boxes are for A7 size, and you can customize your size. The boxes are usually made from kraft paper mounted on the corrugated material. Inside, the boxes will be in brown kraft tones. However, you can change it to white or paste another sheet of printed paper to make it look more beautiful. We offer robust A7 mailer boxes to deliver various types of products. It is not difficult to find and obtain these boxes, even if any customization can lead to an understanding of the inventiveness and innovation of your product specifications.