The snokart boot and helmet pack is a clever way of being able to transport your helmet boots goggles and other accessories in one bag on your back this handy bag fits most aircraft overhead lockers we do advise you check with your specific airline before departure and has a removable base stiffener which means that you can change the size of the bag to be as deep as your boots are wide when they are stood next to each other so the bag can be squished into more restrictive compartments if necess