I have the bag..an xl and used on both my america and my R3T touring..put my duffle bag of clothes inside ..when camping will fit my bag,tent,stove and chow(ultra-lite products)I think it is a better choice than a back rest and more diversified with uses..plus its made in the USA!!!!thinking I will purchase the medium bag for daily commutes and local overniter.My saddlebags are full with tools,rain gear and gloves,etc.
