Usage Tips:Specification:Color:BlackMaterial:600D Waterproof FabricSize:about 120x51x51cm/47.24x20.08x20.08"[Conversion: 1cm=0.3937 inch, 1inch=2.54 cm]Loading capacity: 11 cubic ft Features:Waterproof rooftop cargo bag with 11 cubic feet of space.When not in use, folds for easy and compact storage.Mounts directly to roof rack systems using 8 built-in tie straps.Increases vehicle cargo space Waterproof design protects cargo against road grit, sun, wind and rain Soft sides flex to fit odd-shaped loads Folds compact for easy storage.For use with passenger cars, v ans, and SUVs with roof rack systems. Package Included:1 x Car Rooftop Bag Note:-May it get a little wet when use in the Extremely Heavy Rain for a long time.-Due to different producing batches, product details might be a little different. If you minding the difference, please buy it carefully.-Please allow 1-3CM differs due to manual measurement.