77Seats, interiorAdjust height such that the seat belt passesover the wearer’s shoulder and restsagainst the shoulder. It must not pass overthe neck or upper arm.Rem oving t he b el tTo remove the seat belt , press the redbutton on the catch; the seat belt retractsby itself.Child restrain t systems 3When using a child restraint sy stem, followthe instructions for installation and use.The country in w hich y ou are trav ellingma y not perm it the use of child restraintsystems on certain seats. Always complywith the loc al or national regulations.Selecti ng the right syst emY our child should travel facing backw ardsin the vehicle for as long as p ossible. A childhas a very weak cervical spinal colum n andin the event of an accident is less likely tosuffer injury in a rea r-facing, semi-lyingposition than if sea ted upright.9 Warnin gNever ca rry child restraint systems onyour lap, risk of fatal injury.