Aside from added capacity, backrest bags have a few advantages over other pieces of moto luggage. The first is their mounting systems. Unlike saddlebags, which usually require specific mounting brackets, sissy bar bags will work with almost any backrest. All the bags in this guide have adjustable mounting systems to fit different sizes of backrests. And if you're traveling solo, you won't need a rack, as you can mount the bag in front of the backrest on the passenger seat. In that position the rider can use the bag as a back support, and with a rack, a solo rider can add even more gear (but if you need to carry that much, we hope you're at least crossing the continent). Finally, unlike permanently mounted bags, backrest bags mount and remove quickly, making that end-of-the-day haul to your hotel or tent a thing of ease.