None of the several full frame bags I tried fitting on my e-bike worked so I went back to my old, Jandd partial frame bag I’ve owned for several years and it’s just about perfect, fit-wise. It has webbing on all three sides so securing around the fat top and bottom tubes were not a problem. I webbed paracord between the webbings and the tubes for a nice, tight fit. Looks pretty decent as well, actually..