Very good product, was surprised how much actually fitted in it (keeping within the weight limit of course). Next time I'll buy one that opens on both sides purely for ease of loading and attaching. We drove through a storm and did motorway driving with it on and hardly noticed it was there. It was actually much quieter with the box on than with the roof bars (not part of the product) on their own. Very happy and the customer service is always helpful. Overall excellent.