Postal Shipment Shape: outline drawing of a postal shipment
Circular Postal Shipment: postal shipment in round shape
Quadrangular Postal Shipment: postal shipment in horizontal or vertical right-angled quadrangular shape with oppositely equal length sides
Quadratic Postal Shipment: postal shipment in right-angled quadrangular shape with four equal length sides
Free-Form Shape Postal Shipment: abstract of all postal shipments which an be described only with analogies (silhouette postcard)