The Insurance Institute for Highway Safety has just come out with its latest list of the best and worst new booster seats on the market.

Of the 16 models that were tested, 13 of them earned the top rating of "best bet." 

The IIHS, a nonprofit organization, says children ages 4 through 8 are 45 percent less likely to be injured in crashes if they're in booster seats as opposed to standard safety belts alone.

Only one seat, the Safety 1st Summit 65, was not recommended.

Experts say a well-fitting booster will allow the lap belt to lie flat across the child's upper thighs, not on the stomach. The shoulder belt should also sit snugly at the center of the shoulder.

New York State recommends booster seats for kids who weigh between 40 and 80 pounds and are less than 4 feet, 9 inches in height.