Designed for the long haul, this versatile car seat converts from a high-back booster to a no-back booster, providing years of comfort and safety from preschool to preteen. The Nuna AACE takes security seriously, featuring a side-impact protection system made with energy-absorbing foam and a metal frame for superior protection. It features a one-hand, 9-position, height-adjustable headrest that works simultaneously with the shoulder system, which expands out as your kiddo grows. The seat also features 3 depths, so growing legs have plenty of support and space.

•	High-back booster: suitable for 40–110 lbs. and 43"–57"; at least 4 years old
•	No-back booster: suitable for 50–120 lbs. and 43"–60"; at least 5 years old
•	Seat weight: 15.6 lbs.
•	Energy-absorbing foam and Side Impact Protection (SIP) pods
•	Lower anchor connectors easily secure the booster to the vehicle's seat
•	Belt positioner and colored belt path indicators ensure correct shoulder belt routing and help decrease user error
•	Flame-resistant and contains no added fire-retardant chemicals
•	Seat pad: machine wash cold, air dry flat; do not use abrasives or bleach
•	Plastic and harness straps: wipe clean with a damp cloth