Don't have anything to compare it to, but nice build quality. Adapted to e bike frame and needed to get longer velcro straps to get around battery on down tube. Small bag fit small e bike frame perfectly. Happy so far that I bought a second one for my other bike. I haven't loaded it to capacity yet for a backpacking adventure.
I've used this framebag for a couple years now. I use it to put extra clothes in when the temperatures changes a lot during a ride. Unfortunately I overstuffed it and broke the zipper. I purchased a replacement because the bag is so useful and absolutely waterproof.