Volumetric Weight Packaging/Product space consuming will cause for shipping weight increase.
E.g.- Luggage 2kg but its space consuming we will based on volumetric calculation on this particular product.
Air Freight Volumetric weight (KG): [Length] *[Height]*[Width] cm/5000
SEA Freight Volumetric weight (KG): [Length] *[Height]*[Width] cm/6000