I have used this bag on three trips. The last was three days long, with two days of rain. The bag is a real champ. It worked fine on my mountain bike, which has hydraulic disk brakes. All the straps stayed tight. The main bag is secured partly by a buckle that also clamps. (I want about three more of those clamping buckles for my rock bros seat bag (as those buckles slip)). It takes awhile to figure out how to attached the smaller bag to the large bag (hint its wide velcro straps loop through the same foam "bumpers" as the main bag).
The bag is excellent, justified quickly, in the photo that got in, but did not drink neatly, so it will fit more. Purchase satisfied
I liked it very much, an excellent kit for a Waterspring horseshoe Baul from rinovolk. Workmanship is my respect.
I purchased this bag and I am pleased with the quality and design. It seems like a lot of bag for the money. I am able to fit my warm weather sleeping bag and a few articles of clothing in the main bag. The smaller bag has enough room for snacks, tools, and other such items. I really like the way that the smaller bag sits on the larger bag, making access while riding very easy when you don't roll the flap down and just use the velcro closure. One thing I don't like about the main bag is that it's not very easy to pack. I find cramming my sleeping bag into a long skinny tube quite cumbersome.