Corrugated mailer boxes are made from fluted cardboard, providing excellent strength and protection for shipping and handling. Their easy-to-assemble, self-locking design makes them a popular choice for online retailers, subscription services, and small businesses. Whether you're shipping apparel, cosmetics, electronics, or promotional kits, our mailer boxes are engineered to combine structure, style, and sustainability. Available in kraft, white, or full-color printed options.