(CBS) Booster seats are better than they used to be, but a new report shows not all seats give tykes a leg up on safety.
Booster seats are supposed to position children so that lap and shoulder belts designed for adults fit them properly. But some booster seats do this better than others, according to the Insurance Institute for Highway Safety, which issued the report.
"Boosters that don't consistently provide good belt fit outnumber the ones that do, so consumers need to keep paying attention to this issue,' Anne McCartt, the institute's senior vice president for research, said in a written statement.
The institute said it's impossible to tell good booster seats from bad ones by comparing features. And, it says, forking over the big bucks for a booster is no guarantee that you'll get a good one. So its engineers evaluated 62 seats and came up with recommendations.
If you're looking for seats to which the institute has given its blessing, you have lots of choices. Thirty-one seats were designated "best bets." But watch out for the six seats that the institute rated " ."