The backpack accomplished all of the expectations I had before buying it. I traveled by RyanAir and, as expected, I had no problem. It fits well the luggage test that RyanAir performs and it is comfortable to carry on the back, even if you have 10kg in it. I definitely recommend the backpack for travelers looking for a good backpack that fits RyanAir parameters, but I also recommend it for people who are just normally traveling by car or bus. The whole thing has a good cost-effective. The only problem (which is rather an improvement suggested by me than a problem) is the lack of wheels, so that you have to carry it on your back every time and, obviously, after some hours with 10kg on your back, you'll probably get a backache.