And you may not be able to install three car seats across. Like all of our other high-back picks, this seat converts to a backless booster. Both the high-back and backless modes fit kids between 40 and 120 pounds and 38 to 63 inches; this seat better accommodates heavier and taller kids than our other… Continue reading Where is the latch release on a Graco TurboBooster LX highback car seat?