The Evenflo Evolve offers extended use with 3 modes that accommodate your child forward facing from 22-120 lbs. Mode one features a 5-point safety harness, mode two allows you to use the vehicle belt as a high back booster, and mode three transitions to a no back booster. The Evolve features e3 Expanded Zone of Protection - 3 layers of superior protection that reduce side impact crash forces up to 50%. 4 harness slots and a 5-point safety harness ensure an accurate fit, while the up-front harness adjust and recline allow you convenient access to adjusting the car seat.