Solid bag- held up on a 65 mile, 2 day bikepacking trip through the Anza Borrego Desert- no problems. Can't find a bigger pannier on the market- much bigger than almost anything you'd find at REI.Some others have talked about the plastic top attachment failing or the rivets falling out- never had an issue. I guess more time will tell, but seems solid to me.With bags like this, you debate between cost/durability/weight. You never get all three. Here you're getting durability and cheap cost. The sacrifice is this bag is heavier than the competition because of all the extras (laptop sleeve, plastic mounts, backpack straps, etc).in my opinion, happy with the purchase and i'll be buying another one. If i want to reduce weight, i'll just cut off the extras.