The be safe izi modular car seat has been developed by be safe to be used from approximately 6 months to 4 years designed to be used in combination with the izi modular isofix base the izi modular conforms to the most up to date safety guidelines r 129 or i size the izi modular car seat can be used rear or forward facing on the same base this means your child gets the benefits of increased safety rear facing for as long as possible up to 105cm but also enables parents to have the choice if