This bag is perfect for carry on. It meets the size requirements but also has plenty of room for a few days of clothes and supplies (minimalist) so you don't need to check a bag. The straps are comfortable, bag is well made and the blue color is beautiful and unique so nobody else grabs your bag. Hopefully!I love it and just ordered my son one too for our upcoming travels.The pouches in the front will make chargers and electronics easy to remove when the bags are inspected. And the flap pocket fits the little 3.4oz bottle pack (I also ordered on Amazon) like a glove. The buckles add extra security and stability.Traveling with my young son, hands free is the best bet. And it's comfortable enough he will be able to carry his own.