After reading the mixed reviews, I decided to purchase this for my fiance just before Christmas. I believe that it was an excellent choice and worth the money. It has many compartments and it seems to be durable. I'd recommend this product, I like the look of it while being worn. It's not too big nor is it bulky. Nice backpack.
I chose the small version, it fits perfectly across the rear seat on my '15 WeeXT. I've been looking for a waterproof yet accessible bag for touring. I've been using regular waterproof bags and hated fighting to get things out when I needed something during a day of riding. This bag is very easy to get into from the top at any time without unlashing from the seat. Stores my sleeping bag, inflatable pad and pillow plus sundry items I don't ever want to get wet. I love the d ring lashing points and found the bag easy to secure to the bike. A great buy!
After 3 months use on every day to go to work. Amazing quality build. Great capacity and price. It Won't shake while in transit.
The only 2 things to have in mind are: 1. The lack of a special storage for a notebook. If you have a 13" or less, it will be loose. But if it is 14-15" it will be fine because of the U zipper it has. 2. When its rains, the rain cover is ok for a short ride but if you use some kind of rain jacket, the back of the backpack will be wet very easy. I totally recommend this backpack. Best quality ever.