A new study finds that companies that make car booster seats for children are getting better at designing them to protect kids.
Of the 53 new booster seats the Insurance Institute for Highway Safety tested, 48 received the nonprofit's highest rating. Two models of booster seats, made by Dorel Juvenile, were not recommended. When IIHS first began rating booster seats about eight years ago, only a quarter of seats earned the highest rating.
Booster seats are made for children between 4 and 8 years old who have outgrown their car seats. Kids who sit on the booster seats are 45 percent less likely to be injured in a crash compared just using seat belts alone, the IIHS says.