Evenflo continues to redefine industry standards with the new rollover tested SafeMax™ 3- in-1 Combination Seat. The SafeMax 3-in-1 Combination Seat allows your family to travel with peace of mind and provides extended safety allowing you to transition the seat between 3 different modes of use. This seat can be used as a harness booster, high back booster, & a no back booster.