The base of the bag is rigid, therefore if you attempt to place in overhead bin on airplane wheels first it will not allow the bag to go in far enough, you'll have to place the bag in long ways or turn the bag upside down. Only one external very small pocket on top barely big enough for your ticket, passport, wallet. You'll have to remove all three to get to one. Great material and construction. If the bag was a bit smaller and the base wasn't as large , and if it had enough easy access pockets it would be a good bag. In short, don't waste your money unless you plan on checking the bag.
This bag is not carry-on sized. It's ALMOST. I've had it fit, I've had it not fit. You cannot rely upon being able to carry it. It's rugged and a decent bag, but you need to check it. If you want to buy a bag you need to check, get a bigger one. Not recommended.
I spent some time researching for a new carry on before getting this one. I travel monthly and being able to carry a bag on board is critical. This bag is very well built and I am happy with the overall construction, but the base is too long, and on some planes, the base is an obstacle preventing the overhead from closing. So far, it fit on one 737 Jet blue without problems; had some difficulty on two other Jet blue flights and would not fit on three Southwest flights using Boeing 737s. 737 is a popular aircraft, so you may have to take your chances and get your bag pulled for regular check in. This is not a bag that can be consistently carried on.