CERTIFIED SAFE: Drive safe knowing your Spider-Man high back booster car seat exceeds the Federal Motor Vehicle Safety Standard (FMVSS 213) and boasts a BEST BET BOOSTER rating from the Insurance Institute for Highway Safety (IIHS).SEAT BELT POSITIONING: Our Spider-Man high back booster has a shoulder belt positioning clip so you can easily adjust the seat belt according to your child’s size, and a belt positioning clip guide for the backless booster.The backless booster is designed for children over 4 years old, weighing 40 to 100 pounds, and measuring 40 to 57 inches in height
AGE AND SIZE RECOMMENDATIONS: The high back booster is designed for children over 4 years old, weighing 40 to 100 pounds, and measuring 38 to 57 inches in height.GROWS WITH YOUR CHILD: The KidsEmbrace Marvel Spider-Man high back booster car seat grows with your child, and easily transitions from a high-back booster to a backless booster depending on their age and size.