Originally Posted by
Markok765
Whats the difference between a single strap, and a real messenger bag?
One has a stabilizer strap to keep it in place, the other does not. Without a proper way to secure the bag, it won't stay put. Also, if the main strap is too loose, it will flop around more. I wear my main strap so tight I can't get it over my helmet without loosening it. Another feature of a proper messenger bag is a main strap that is super easy to loosen and tighten. If your bag does not have these two features, it won't work well on a bike.