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Car seats: age and weight guide

At a glance information on what age and size your child should be using a baby seat, car seat or booster.


Posted: 22 June 2007
by Laura Lee Davies

Car seats are usually labelled by weight with an age-range as a rough guide. Let your child's weight be your guide of when to move up to a bigger seat as some children are smaller than others and may benefit from staying in a car seat longer than bigger children of the same age. At the older end of the range, their height is an important factor and they should remain in a booster seat or cushion until they are over 135cm.

Baby Seats
Rear-facing seats for children weighing up to 13kgs. This is from birth to a maximum age of nine to 12 months (but quite probably younger).

Child seats
Forward-facing (some rear facing seats can safely be turned round, where this is clearly stated) seats for children weighing from 9kgs to 18kgs. This is from about nine months to four years.

Booster seats
These integrate the adult belt into a seat with good support for the child's body (and preferably head). These are suitable for children weighing between 15kgs and 25kgs. This is about four to six years of age.

Booster cushions
These are what they say, really. They will lift the child up so the adult seat belt cuts across their body more comfortably. These are suitable for children from six years of age. These should be used until your child is over 135cm in height, after which time, an adult belt may be used.


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My son is 2 but has an older brother he wants to be in a booster car seat like his big brother is there a car seat inbetweener the 2 for a child of his age?

Posted: 05/01/2011 at 14:13

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