Why Cardboard Boxes? Cardboard boxes are very effective, especially when quantity on a lower budget is the goal. Use with our glossy peel and stick labels to create a very attractive lead box. Durability, optimum size, ease of use, great looks, our cardboard boxes cannot be beat! Our cardboard boxes are easy to set up, and do not lose their structure after repeated use because of our unique easy open/close tabs on bottom of the box.