When can my child with achondroplasia ride in a booster seat?
Use a booster seat after your child outgrows her car safety seat with a harness. This is usually when a child weighs about 40 pounds or her shoulders are above the top harness slots of the car safety seat. A belt-positioning booster seat will lift up your child so the seat belt fits properly and will make your child safer in a crash. Never use a booster seat with a lap only seat belt. Because your child is shorter than her peers, she should be able to use a booster seat longer.