Review on 🚗 DEISNGB Expandable Roof Cargo Carrier - 21ft³ and 15ft³ Capacity, Waterproof 900D Fabric - Fits All Vehicles with or without Roof Rack - Car Roof Bag for Carrying and Storing Goods (15-21 ft³) by Mark Sutovsky

Okay, it didn't quite fit the roof of our small van due to the solar panels and other things, so we had to redo it a bit to hang it down. So I don't know if that was the cause of the crash, but it was leaked. During the ride we encountered LOTS of rain and the contents of the bag got wet. It may have been user error, but I just posted it there. If the monsoon rain hadn't hit us, everything would have been great, even the jury rigged like us. The zippers appear to be quite strong and fairly durable. Comes with a storage bag so you can put your large bag into a smaller bag.