I bought this piece of luggage because it seems to be the lightest weight carry-on out there. I'm not doing checked luggage for a trip to Italy in March, so I wanted something really lightweight. It looks very nice--I bought the dark blue, the zippers all work well, the handle works well, the wheels all spin, etc. In the main compartment there is one side where you pack the bulk of what you're bringing. The other side has a zipper compartment where you can stuff more items, but it's not as roomy as the opposite compartment. There are also two zippered compartments on the outside front, one quite roomy, but not expandable. The main compartment is expandable. In the expandable state, it's about 44 1/2 linear inches. The measurements given online are accurate. Not expanded it's about 43 linear inches. Some reviews mention the TSA lock and of those reviews, a few had challenges with it. The Amazon page where the case is displayed has lock information which is fairly clear. My case arrived with all the numbers lined up OOO with an arrow indicating that this is the line. It was locked. At first I fumbled with it, but then discovered a little plastic slider which I moved to the right, and voila, the lock popped open. I haven't closed it again, and I haven't tried setting it. I will probably not do that. After it's inspected, and esp. if I have to gate check it, I'll use twist ties on the main compartment zippers. I don't want to mess with the lock, and I'd feel this way about any luggage. The lock would only be a momentary inconvenience for anyone who wanted to get into this case or any case. I'm please with this purchase and will update about sturdiness after my trip. Bottom line: if lifting a case to storage above is a concern for you, this carry-on is it.--AFTER MY TRIPI now took my trip. Since I was going to Italy, I stayed in a hotel overnight near the airport. I discovered that my personal item (no wheels) was too top-heavy for this lightweight luggage. I tried rolling it on tile floors in the hotel, and it buckled and wobbled. I began to notice that the sides were flimsy. Went out and bought new luggage that night, yes, prior to my trip the next morning. I bought a personal item with wheels and a sturdier carry-on with wheels. I ended up having to check my larger bag thru to Rome, and I would have had to arm-carry my personal item through the Rome airport if I hadn't changed luggage.Bottom line--I would not recommend putting this carry-on through baggage handling--it's flimsy and wobbly. I'm so glad I opted to get new luggage before the trip. It would have been a disaster making my way through the airport.