<P> Booster seats lift the child and allow the seat belt to sit firmly across the collar bone and chest, with the lap portion fitted to the hips . If the seat belt is not across the collar bone and the hips, it will ride across the neck and the stomach and cause internal injuries in the event of a collision . </P> <P> There are two main types of boosters: high back (some of which have energy absorbing foam) and no back . A new generation of booster seats comes with rigid Isofix (Latch) connectors that secure to the vehicle's anchors, improving the seat's stability in the event of a collision . </P> <P> The consumer group Which? is calling on manufacturers and retailers to phase out backless boosters, as it says they don't provide enough protection in side - impact crashes and could put children at risk . So while backless booster cushions are better than using no child seat at all, they do not provide adequate protection in all circumstances . </P> <P> Used for Groups I, II and III . </P>

When did rear facing car seats become law