That´s a 30l Kriega in the back. Did stuff it to the limit though. Went on a 2 weeks trip to greece last year and will carry exactly the same package in return this spring.
The quality is superb, 100% water proof and easy to clean after a longer track experience.
The best is the white inner lining. Eventually you are able to find what you were searching for..
For fixing the front hooks I had to attach the additional belts to the trellie. Easy to handle.
For the back hooks I simply assembled to more belts as a giant loop which I then lead beneath the back fender. Stayed in place for several thousend km w/o any easing off.
All in all I´m still convinced of this system as it is really versatile. I use it on all my bikes in different configurations. I owe another 20l Kriega I attached on top for my last years trip to the Isle of Man TT.
My bike is on the far right side.