UPPAbaby ALTA High Back Booster Seat


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Safety, elevated.™

Secure your child on the last phase of their car seat journey with the ALTA High-Back Belt Positioning Booster. From energetic elementary school kids to independent pre-teens, the ALTA delivers proper seat and belt positioning with style, comfort and ease.


  • Buckle up. Move on: Our SecureFit™ belt routing system with lap belt positioner ensures proper fit for the lap and shoulder belt while preventing slippage.
  • Lock in security: Rigid UAS connectors secure the booster to the vehicle seat guaranteeing proper alignment.
  • Grows with them: The seven-position, Active Support Headrest accommodates growing children.
  • Protects heads with safety smarts: Specialized foams provide added side impact protection.
  • A small feature that makes a big difference: Positioned on the side of shell, the Side Impact Pods absorb and disperse crash forces.
  • Sit back and relax: The spacious design paired with dual armrests provides added comfort for your child during the ride.
  • Hydrate on the go: The ALTA includes a removable cup holder that can attach to either side of the seat.
  • Removable and washable seat fabric: Spills happen. The seat base fabric quickly zips off for easy cleaning.
  • LIMITED LIFETIME WARRANTY: UPPAbaby offers a limited lifetime warranty on all car seats representing our commitment to child passenger safety.