I own two brooks saddles, a b67 and a b72, and I love them. For this reason, I decided to try out the very expensive brooks bags, hoping the quality would be as good as their saddles. Unfortunately I was wrong. I give only 1 star for quality control / manufacturing flaws, if these were fixed it would be a pretty good bag. After 1-2 months of light use one of the rivets that held the leather strap that holds the roll top closed popped off. I tried forcing the rivet back into the button and gluing it with super glue but it popped out again.Then, one of the buttons on the upper side that closes the roll top, just popped off. I then returned the backpack. The metal rivets that are used are not bonded tightly enough and do not hold up under any load. Since these rivets are basically what secure all the straps to the bag, and secured the roll top, it is a fatal design flaw. For that reason, I cannot recommend this bag--or any bag in the brooks line for that matter.The elastic material mesh water bottle pocket began to unravel and cinch up at the top.The straps themselves, very strong and I like the metal hooks for closure (although the oversized metal clamps on the straps can be annoying if you are using the backpack while walking as opposed to riding (since your arms are swinging by your sides, they catch on the oversized metal clamps).The good:The bag material itself is nice--tough and water resistant.The overall design and shape of the bag seems correct.The stitching on the velcro on the outside pocket failed pretty quickly, which was annoying. Besides that, this bag is great quality and I'm really happy with the way it feels when I'm biking/walking, even when it's stuffed full.Simple and understated design. Great as an everyday backpack. Straps are a wide canvas which gives no padding at all but weight is distributed in a way that is still very comfortable on your shoulders. Love that the roll top allows you to adjust for different volume. Wish the interior pockets were thicker or had a better structure. I can't really use them as objects often block me from putting my laptop in smoothly.If you like Minimalist, subtle and quality crafted product, this is the one for you.