I purchased this bag because I am a YouTube explorer and I do extensive traveling for the videos I produce.  I needed a back that not only would fit two days worth of clothes but also provide room for my camera equipment.  I also really didn't want to have to buy another one if for some reason the bag failed on a trip.  I've used this bag on my last four trips and also its big, it works well and is extremely durable.  I don't use it for flights, because that's not the kind of travel I do, for me its all road trips and staying at historic places without elevators!  That means its gets bumped around a lot going up and down stairs.  The stitching, fabric, straps and rolling hardware are all 5 star quality.