Century Boost On Instruction Manual page 27

3-E | Securing Child Backless Booster
Use only the vehicle lap and shoulder
belt system when restraining the child
in the booster seat.
1. Place Child In Seat
Have your child sit in the booster seat, with his/
her back flat against the back of the vehicle seat.
2. Ears Must Be Below the Top of the Vehicle
Seat Back or Head support.
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