Group 3
Also known as booster seats, these position the child so that the adult seat belt is held in the correct position for safety and comfort.
Position: Sitting, forward-facing
Recommended weight: 22 kg to 36 kg (48 lb to 76 lb)
Approximate age: 4 to 10, and above if the child is not 36 kg yet
Booster seats
Booster seats are recommended for children until they are big enough to properly use a seat belt. Seat belts are engineered for adults, and are thus too big for small children. In the United States, for children under the age of 4 and/or under 40 pounds (18 kg), a seat with a 5-point harness is suggested instead of a booster seat.[23]
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.
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.
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.[24] So while backless booster cushions are better than using no child seat at all, they do not provide adequate protection in all circumstances.