Choose a box suited to the weight and dimensions

A box that is too large increases internal movement; one that is too tight leaves little room to absorb shocks. Aim for a balance between protective space and stability.

For heavy items, avoid cardboard already weakened by moisture, creases or previous shipments. Corners and the base should support the contents without collapsing.

For substantial weight, use a stronger construction or double-boxing system rather than relying on one lightweight outer box.