We got this car seat as a second seat for my husbands car. This is a great seat when not installed - once installed in the car it is horrible. You can not get to the tighten/loosen adjuster knob once the seat is installed.We had the seat installed by the local fireman- and he put the seat in very tight(the correct way) and every time we put our 6 month old in the seat it is a struggle to tighten him in or get him out.I plan on bringing this seat back to Babies R Us for an exchage-