Our 300mm x 300mm x 300mm sturdy mailing boxes provide more protection than satchels when posting items to customers. Mailing boxes also help ensure your product arrives unblemished at its destination, protecting your investment and helping prevent requests for refunds or poor reviews. For fragile items, mailing boxes work well with additional protection, such as bubble wrap. Our boxes are blank, allowing you to personalise them to suit your brand, if desired.