The SlimFit3 LX 3-in-1 Car Seat is Graco’s slimmest design. This narrow all-in-one car seat can be used as a rear-facing harness (5-40 lb), forward-facing harness (22-65 lb) or highback booster (40-100 lb). Integrated belt lock-off makes for easy vehicle seat belt installation in forward-facing mode. Graco’s exclusive push-button InRight™ LATCH provides an easy, one-second attachment with an audible click to help ensure secure installation. The No-Rethread Simply Safe Adjust™ Harness System allows you to adjust the height of the headrest and harness to 10 positions with just one motion for just the right fit. Breathable mesh AirFlow channels provide improved ventilation to keep your child cool and comfortable. The steel-reinforced frame provides strength and durability for years of use, and EPS energy-absorbing foam provides effective impact energy management.