2016 Britax Frontier Car Seat Child Weight - Forward Facing Harness 2 years and 25, up to 90 lbs complete side impact protection 9 posiition adjusting height good used condition The Frontier combination Harness-2-Booster seat can be used for children over 100 lbs. as long as the vehicle shoulder belt guide places the belt in the proper position for the child, and the top of the child's ears are below the top of the head restraint, and the child physically fits in the seat, and is not being used beyond its expiration date (9 years from date of manufacture). expires 2025 $125