Graco FlexiGrow R129 Group 1/2/3 Car Seat - Quartz. FlexiGrow R129 goes from harness booster mode (76-105cm) to highback booster mode (100-145cm), growing with your child from toddler to pre-teen. When your big kid is ready for highback booster mode, conveniently stow the harness in the car seat’s integrated storage.
