Something like this big bag
Or this
small bag
Must add that I own them both
and another Tusting black saddle leather backpack that is now 20 years old.
I love the workmanship and the quality of the leather. They took the 20 year old one back and repaired it/replaced the zips a few years ago.
I am a sensible sort though, hate bling and logos and thought that they were 'sensible' forever options.