my opinion is that of someone who has just bought this product for just two months, and so I do not have much hindsight. Nevertheless I use them every day for a round trip between home and work 30 km and I find this simple but beautiful product on my black Scott bike red piping, and as well fixed, not moving, and very honest capacity. I plan to make this summer a Paris-Bordeaux by bike with these bags ... I think I will not be disappointed.