Very happy with the quality of these pannier toppers. The day I recieved them, I put them on and set out for a 4 day trip. 3 of those days were through steady rain, and these bags did a great job of keeping my gear and clothes dry. Overall exceptional quality materials and well constructed. Extra interior pockets are very handy. A word of caution: be careful how you handle your pannier lids with these installed, the aluminum cases weren't designed for much weight and they will flex and bend the hinges. I found this the hard way. Otherwise, I went with the large version, which has the same footprint as the small, just a little taller. Happy I chose the large.