Corrugated Mailer Boxes are crafted from high - quality corrugated cardboard, which consists of a fluted medium layer sandwiched between two flat liner boards. This unique structure gives the cardboard mailer boxes excellent cushioning and shock - absorption properties, making it highly suitable for protecting products during shipping and mailing. The boxes are lightweight yet durable, helping to reduce shipping costs while ensuring that the contents remain safe from external impacts, moisture, and dust. They come in various sizes and can be easily sealed with tape or adhesive, providing a convenient and reliable packaging solution for e - commerce businesses, online retailers, and anyone who needs to send items through the mail.