All of our shipping and moving boxes are cardboard boxes. This is because they are light, strong, cheap and easy to find. Cardboard boxes come in many sizes and shapes so it is generally easy to find a box for moving or shipping that will meet your needs. We describe our boxes using length, width, and depth in inches. So a 10 x 10 x 10 box would be a perfect cube with 10″ sides. Keep this in mind when ordering.