Child Booster Car Seat Age. By law your child should sit in an approved car seat to at least 135cm or 12 years whichever is the soonest. The appropriate age is generally at least 5 even though many boosters start at age 4.
In this state children aged between four and seven must right in a booster seat or car seat designed for their age. Using a high back booster seat instead of only a booster ensures that your child is provided with a side impact protection during the whole period of use. At madeformums we would therefore recommend using high backed car seats up to the height of 135cm or until children are over 12 years old.
By law your child should sit in an approved car seat to at least 135cm or 12 years whichever is the soonest.
Children are ready for a booster seat when they are over 40 pounds and have the physical maturity to remain seated properly at all times including when asleep she explains. Booster seat age refers to the age of a child at which they are ready to move from a car seat to a booster seat. When preschoolers outgrew their car seats they need a booster seat to help them sit properly on the car seat and use the safety belt. This is the car seat that your child will use for the longest time.