I have used it for 1600 km long journey. Product is awesome for long journey. It's 100 percent waterresistant. I used it in my Renault Duster. It holds firmly in between the side rails. We had carried 2 big suitcase and 4 shoulder bag. I traveled through Akumbe which is known chirapungi of South India during the monsoon season where we had heavy rain fall. In duster the roof top is safe from dent as far as we are below the recommended weight (80 kg for me)
It arrived yesterday. I was really impressed with the packet. It comes in an amazing waterresistant bag which can be used separately as well. Quality of the material is top class. Its pretty spacious with A1 zips all around. I plan to use it for my next long drive to Himachal, will share detailed feedback then.