What @hellobabyhattie said. You should only use what came with the car seat. After market products can void the warranty if ever in any wreck. They was not test with the safety measures of the seat and put to much space between the baby and seat to the point where it's hard to get a good installment with the straps. Not being rude or bitchy just passing on information that I'm learning through classes to become a CPST.

You shouldn't use it in a car seat.

I was given one and my baby doesn't like it.