High-Back to Booster: Designed to GrowFrom the makers of the IIHS Best Bet × IIHS Best Bet Because automobile seat belts are designed for adults, the Insurance Institute for Highway Safety (IIHS) evaluates belt positioning boosters on their ability to provide good lap and shoulder belt fit. “Best Bets” are the highest rating and according to IIHS, they provide good belt fit for typical 4 to 8-year-old children in almost any car, minivan or SUV. KidFit® Booster, the KidFit® Zip Air Plus 2-in-1 Booster boasts premium features like an innovative, quick-release LATCH for grab-and-go convenience and 3D AirMesh × 3D AirMesh Fabric with mesh filaments and elevated airflow channels designed to improve ventilation where kids need it most: on car seat and stroller backrests & seats. fabric for breathability. These features and more combine to make the KidFit® Zip Air Plus one of the most comfortable, trusted and easy-to-use booster seats.Breathability + WashabilityKidFit® Zip Air Plus includes 3D AirMesh channels throughout the backrest and seat for increased air circulation where kids need it most. The extra padding features a convenient zip-off design, making them easy to remove for cleaning while still maintaining use of the standard fabrics underneath. All fabrics, including armrest covers, are removable and machine washable.Engineered for ComfortKidFit® Zip Air Plus features a contoured, ErgoBoost® × ErgoBoost® An ergonomically designed contoured seat that features multiple layers of foam for comfort and support. Plus seat with 3 layers of foam padding and a one-of-a-kind zip-on cushioned leg rest for high class comfort. A 2-position backrest adjusts to mimic the vehicle seat position. The backrest is easily removable to create a backless booster for older children.Customized Protection + Ease of UseDuoGuard® × DuoGuard® Includes two layers of protection, a rigid shell and EPS energy-absorbing foam, that surround two zones: the head and torso. offers 2 layers of protection: a rigid shell and high-quality, EPS energy-absorbing foam × EPS Energy-Absorbing Foam Expanded Polystyrene (EPS) is a high quality, dense foam that is found on many Chicco car seats due to its proven ability to effectively absorb energy. that surround the head and torso with integrated side wings. The high-back booster easily adjusts throughout 10 height positions to extend protection as kids grow.Premium LATCH connectors × LATCH Connectors Lower Anchors and Tethers for Children, or “LATCH,” is a car seat installation method in which the vehicle seat belt is not used. Instead, the car seat LATCH connectors attach to the lower anchors found in the seat bight of your vehicle. Refer to your vehicle’s owner manual and your car seat manual for more information. and a force-multiplying, SuperCinch® × SuperCinch® A car seat installation feature that uses force-multiplying technology to tighten the connection between the car seat and the vehicle LATCH hooks to reduce overall car seat movement. one-pull tightener stabilize the seat for easy in/out and keep it secured when unoccupied. The upgraded quick-release LATCH provides convenient one-hand removal from the vehicle LATCH system for easy transfer between seats and vehicles.One-hand, quick-release LATCH3D AirMesh channels throughout the seat and backrestZip-on cushioned leg rest for extended comfortDuoGuard® head and torso protection with 10 positionsIntegrated side wingsZip-off, machine-washable seat pad, cushions, and armrest coversErgoBoost® Plus contoured seat with triple-foam paddingConverts to a backless booster2 space-saving CupFolders™Bonus kid consoleUsageKidFit® Zip Air Plus is designed for children at least 4 years of age, between 38-57" tall, between 40-100 lbs. in high-back mode and 40-110 lbs. in backless mode, and can sit relatively still in the same seated position throughout the car ride.Care and MaintenanceMachine wash fabrics in cold water on delicate cycle using mild detergent. Hang to dry. For complete care and maintenance instructions, refer to the product’s instruction manual.