DuoGuard head and torso protection with 10 positions. DuoGuard supported with EPS energy absorbing foam. Premium LATCH and SuperCinch one pull tightener stabilizes seat. ErgoBoost Plus seat with triple foam padding. 2-Position backrest is also removable for backless booster. ClearTex fabric is made with no added chemicals. Integrated side wings. Dishwasher safe CupFolders. Bonus kid console fits into CupFolder. For children at least 4 years and 38-57" tall. High back mode supports 30-100lbs. Backless mode supports 40-110lbs.