Traveling with kids always involves carrying more stuff than you think. I was ecstatic when the kids moved out of car seats and diapers as it cut the amount of luggage I was hauling around significantly. But they still needed a booster seat. Enter the Bubblebum booster seat. Invented by a Mom in Ireland who also disliked lugging large, plastic booster seats on trips, the magic of these seats are that they are inflatable.