The Insurance Institute for Highway Safety tested 31 new booster seat models to see how well they fit.
A total of 19 earned its highest rating. The institute says well-made booster seats can save lives.
Studies have shown children in booster seats are 45 percent less likely to get hurt in a crash, compared to kids who buckle up without one.
For more information on the ratings, click here: http://www.iihs.org/