MY FAMILY TOOK A 4.5 HOUR LONG DRIVE FOR A VACATION. WE STOPPED ONCE TO GET OUT AND WALK AROUND. MY SON WAS SITTING IN HIS CAR SEAT (MADE IN 09APR2010, NAME CHASE, MODEL # 3292566 PQ2, MANUFACTURED IN US, EXP. DATE 07APR2016) THE ENTIRE TRIP WITH THE EXCEPTION OF US STOPPING ONCE. THIS CAR SEAT IS OUR BACKUP CAR SEAT SO WE DON'T NORMALLY USE IT FOR LONG TRIPS, WHICH WOULD EXPLAIN WHY WE NEVER NOTICED THIS BEFORE. WHEN WE GOT TO OUR DESTINATION, MY HUSBAND NOTICED MY SON HAD A NICKLE SIZED CIRCLE MARK ON HIS LOWER BACK. IT LOOKED LIKE SOMETHING WAS RUBBING/PRESSING AGAINST HIS BACK AND BREAKING THE SKIN.THE FIRST THING I CHECKED WAS HIS CAR SEAT. BEHIND THE COVER ON THE ACTUAL PLASTIC FRAME WHERE MY SON'S LOWER BACK WOULD REST IS A CIRCLE WITH A SHARP PLASTIC POINT IN THE MIDDLE. I BELIEVE THIS RUBS THROUGH THE CAR SEAT COVER AT MY SON'S LOWER BACK EVERY TIME WE USED THE CAR SEAT. THE LONGER THE TRIP, THE MORE IT RUBS, AND THE MORE INJURY CAUSED. I WILL NEVER USE THIS CAR SEAT AGAIN FOR FEAR OF HARMING MY SON. *TR