Built sturdy and strong for goods that require extra protection. Constructed tough to protect and handle heavy loads. Safeguards against bursting. Tested to hold up to 200-lb per square inch. Extremely sturdy and heavy-duty with single-wall construction. Works as a protective buffer for what s packed inside. Perfect for shipping storage moving transport and general-purpose applications. Cube design fulfills most carrier specifications for shipping and handling. Cube configuration lets you evenly disburse weight. Is ideal for secure stacking.