A non-stackable pallet is a pallet which must not have any other pallets stacked on top of it. It is usually used for the transportation of fragile goods in which the customer sending the shipment has requested that extra care be taken to avoid damage to the fragile items within the shipment. Therefore a non-stackable pallet often costs more to ship due to the fact other pallets cannot be stacked on top of it which creates unused shipping space on top of the pallet.