Booster seats

[mrsmummy]

My ds is 11 and over 135cm tall, so he doesn't have to use a booster seat in the car but have read they are still recommended till a certain height and I can't for the life of me think what height it was, can anyone help? 140cm rings a bell but not sure thanks

Most seats in cars are desighed for people of 150cm.

This american website has some useful hint booster seat Depending on which seat they are in a high back booster also provides side impact protection.