iZi Up X3 provides your child with great safety and comfort. Your child can easily adjust its own sleeping positions by using the handles on the sides. The iZi Up X3 is installed with the 3-point vehicle belt and is easily adjusted to the child as they grow. The enclosed belt routing keeps the seat belt in place and ensures that the seat belt is always positioned correctly over the child€™s shoulder. In order to avoid incorrect installation, iZi Up X3 does not have any unnecessary belt horns.