The mifold is designed for children aged 4 and above. Experience a more advanced, much more compact, portable booster seat - it's 10x smaller than a traditional booster seat, yet just as safe. The mifold lowers the adult seat belt so that it's brought down from more delicate areas like your child's shoulder, face, neck and stomach and positioned on their shoulders, hipbones and across their lap. mifold Grab-and-Go booster seat has regularly had successful crash tests in certified facilities around the world and meets and exceeds the European crash test standard ECE R44-04. mifold is mighty small and mighty strong. mifold is the most advanced, compact and portable booster seat in the world.It’s more than ten times smaller than a regular booster and it’s just as safe. We call it the 'grab-and-go’ booster seat.