Given the low price of the item, I was a little concerned about build quality, longevity, fit etc. I took a chance on it as I figured it looks good and it was exactly the kind of thing I was looking for. When it arrived I was pleasantly surprised - the construction is sturdy and of high quality; the material is strong and durable and is waterproof (although you'll want to use the liner for heavier downpours - light rain is fine). The straps seem pretty strong and even the buckles they attached to are still strong, despite being made of plastic. It sits well on the bike and, for my particular model, the buckles which pass under the headstock are especially practical. If I had a gripe, it would be that the window on the top of the bag is not that useful for a mobile phone, due to where it sits on my "tank", but I don't use it for that purpose anyway. Overall, I'd highly recommend this bag, especially in conjunction with the claw mini tail bag, which I also have.