The child car seats you use to keep kids safe might not be as safe as you think, Philadelphia television station WCAU reported.

Experts say four out of five child car safety seats are incorrectly installed.

Gina Duchossois, of the Safe Kids Coalition told the station there are few steps to make sure that a safety seat is installed correctly.

"It's important to put your weight into the child safety seat and pull the belt tight, so the best (thing) to do would be to kneel into the children safety seat and then pull the seatbelt so it is tight," she said.

The seat should not be able to move more than an inch along the belt. Next, make sure the lower anchors and tethers are properly attached.

Another big mistake experts say they see is a harness that is too loose.

Duchossois said that to prevent the harness from falling off the child's shoulder, you should pull the retainer clip up and put it at the child's armpit level. The retainer clip keeps the harness on the child's shoulders.

Proper Installation Of Car Seats

SafeKids.org

American Academy of Pediatrics

Children's Hospital of Philadelphia