I bought this for Hohner B2AV 5 headless bass, and it fitted perfectly.
With this type of bass, you haven't got a lot of choice when it comes to bags or cases. It seemed to be either this bag, or a flight case, which was a lot heavier and more expensive.
I'm happy with the bag. It gives a certain amount of protection, but I wouldn't throw the bass into the back of the van and expect it to be OK.