This product is VERY misleading.  The pictures, both of the backpack by itself, and of the boy wearing it, make it look much bigger than it really is.  It looks as though it covers the boy's back, but in reality, it wouldn't cover the back of an infant.  The company lists "large backpack compartment allows for ample storage."  I was expecting at least a toddler/pre-school sized backpack, and planned to use this for my son's toys on our next flight.  I still plan to use it for the harness/leash feature in the airport, but will now have to pack an additional carry-on for him.  I'm very disappointed.