Parents, please think twice before you buy this product! Ask any carseat technician, and they will tell you it is an untested product that could fail at any moment. If it happens to fail during a crash, it would be like you had not even buckled the seat in. It really isn't that hard to get a tight fit without this product. If for some reason you cannot, then take your seat to a carseat checkup- it could be you need a locking clip, which the Mighty-Tite does NOT replace, or your seat may be incompatible with your car (yes, it does happen!) I had one in my car that ruined my seatbelts. Had I not had my seat checked and been in a crash, my daughters seat would have come flying out of the car. Don't make the same mistake.