A. Saks EXPANDABLE 21" Expandable Carry On 

"Looking for a very lightweight carry on bag that wasn't a duffel style. I don't mind a single large main compartment as long as it unzips like a clamshell to full open. This bag has a nice look to it, not flashy like a gym bag but the yellow accents are a nice touch. Some people probably would prefer a bit more structure or more compartments even if it added a bit of weight, but then you'd be into Red Oxx territory and I do not plan to spend that much on a 6 times a year bag.... Like those that mentioned it in their reviews, the converted handles as shoulder strap are not very well thought out; they are not padded at all and a bit too short. For me it is fine as I almost always carry by the handles. Had no problems on my first trip with it. Dimensions are not quite accurate... (Note that this bag is virtually identical to the Lucas bag but they list different expansions. Not true.) The expansion is about 1.5". But it still seems plenty big enough. I would not recommend overstuffing it; it's just not made for that. I'd also suggest using a packing cube system as there are cinch straps on one side only and stuff has a tendenccy to collapse to the bottom a bit if you don't pack it right. I'd also warn that if you stuff the smaller partial height side pocket, the width will usually exceed carry on dimensions. I just put some flat stuff in there and had no problem with meeting carryon size with it expanded. Tho being soft sided it probably would be easy to squash into overhead bins. As long as you aren't expecting high end features, this seems to be a well made and sturdy basic bag. The material seems thick enough to resist some abuse, but not to the point of being stiff. This is a causal use bag that seems styled to the business user wanting something classier than a duffel. All in all it seems just fine for the money."