I found and purchased a large luggage bag from
Bikers Friend and must say it is the best motorcycle luggage I have ever owned. It held a weekends worth of clothing and room for my licorice! The luggage easily holds my helmet, jacket and more and is easily removed as a carry-on. The backrest was a nice surprise too. It's pricey but the quality is well worth it!
Pic is from their website ----
