This is the travel booster seat I wished I had. It just wasn’t available when my daughter needed it. We struggled with a variety of inflatable and folding booster seats, but they all just fit her awkwardly. This one holds the seatbelt down toward the child which I think is a better design.
Regular booster seats lift the child up to be in the position of an adult; mifold does the exact opposite: instead of lifting the child up, it holds the seatbelt down (it’s that simple).