When I got my H I also got the liner or backpack for my Foam liner. Now it's been a few years since I flew on a commercial plane , but the overhead i think is too small but if memory serves me right the pack could probably be stowed under the seat behind your Knees. All I know is it looks good. The two zippers can be locked together with a small lock. Do they still have that coat rack in the front of each cabin ?