The car seat lifts the child to the right belt height, and from there their legs are left dangling. Until they are nine or ten years old, their feet do not reach the car floor, and the weight of the leg rests on the edge of the seat, right behind the knee. This causes tired legs, pins and needles in the feet, and kicking the front seat.

A footrest gives them that floor back: the knee stays at ninety degrees, the torso stops sliding down in search of support, and the seat belt stays where it was designed to be. Here are the ones we have, and they differ mainly in where they attach: to the car seat, to the car's Isofix points, or to the booster seat.

Note: a footrest is a comfort and posture accessory. It is not a restraint device approved under R129 or R44, and does not replace the car seat, the booster seat, or a properly positioned seat belt.