The Sterling Pacific 35L two wheel carry-on is singularly the best carry-on luggage made. I have flown about 1,600,000 miles to over 30 countries, and have had luggage from Rimowa to Samsonite and everything in between. The SP 35L Will fit into the overhead bin of nearly every regional aircraft you can find, will not deform like other hard shell aluminum cases while rolling over cobblestone streets in Europe, is easier to pack and unpack being a trunk design instead of a clamshell design (takes up less space when loading/unloading), and rolls behind me with ease (far easier than I thought it'd be). Its construction is also incredibly robust. I expect to be handing this off to my kids someday. Beyond pure function, it's also luxurious. I always smile when I see it, and the leather work is top notch. Lastly, the customer service from Sterling Pacific is exceptional. I don't worry about a thing when traveling should I need to have something repaired or replaced. Looking forward to decades of use!