A child safety seat, sometimes called an infant seat, child seat, car seat, or baby seat, is a seat designed to protect children from injury caused by a crash while riding in a vehicle.
Usually, vehicle owners buy car seats for their children, but sometimes vehicle manufacturers include them as part of the vehicle's design.
Many governments require that children be seated in a child safety seat while riding in a vehicle, based on factors which usually include age, height, or weight. In many countries, vehicle manufacturers are required to make their vehicles compatible with child safety seats.