Review on KING BIRD Rooftop Cargo Carrier Bag - 15 Cubic Feet, 100% Waterproof, Non-Slip Bottom - Fits All Vehicles with/without Roof Rack - Includes 6 Door Hooks and Luggage Lock by Christopher Jackson

First use, short trip with friends and family. The bag is durable and made of thick rubber/vinyl with a zipper. The flash is protected by the additional valve, which is attached with a flypaper. The bag was easy to load. I put my bag on the roof. Then I used a couple of pockets to weigh it down while lifting the sides of the bag. I filled the bag with the remaining bags, zipped it up and closed the flap. The weight of the bags and built-in padding at the bottom keep the bag securely in place. The straps were easy to attach and tighten. It took me about thirty minutes to work alone. Mainly because I had to constantly move around the car. 300 km driven in sun and rain. A little wind noise, but not much, and there's almost no wobble. The rain survived without any problems. No leaks. However, the strong sun has softened the bag and warmed up my pockets inside. I don't think I will use this bag in a place with strong sun. I also only used soft bags like backpacks and gym bags. I'm not sure how this bag can hold normal full sized luggage. This bag has continued to be a good purchase for me and I look forward to using it again.