Stage: High-Back Belt Positioning Booster (40-100 pounds), Backless Belt Positioning Booster (40-110 pounds)Grows with Child: 10 Height positions, Converts to backless boosterIncludes: 2 Dishwasher-safe CupFolders, Machine-washable seat pad/armrest coversSafety Features: DuoGuard head and torso protection, EPS energy absorbing foam, LATCH tightenerIIHS Best Bet Booster designed for comfort featuring a contoured ErgoBoost seat with double-foam paddingEasy to clean: Removable, machine-washable seat pad, cushions and arm rest covers