Stage 3: Booster Seat

Stage 3: Booster Seat

Combination car seat, used without harnessing and installed as a booster seat

High-back booster seat

Backless booster seat

  • Always read the vehicle and booster seat manuals for correct installation and use.
  • All current styles of booster seats must be used with a lap-shoulder seat belt.
  • If you are using a backless booster seat, make sure your child has support from either the vehicle seat or vehicle headrest to at least the middle of his or her ears. This support is important to protect your child’s head and neck in a crash.
  • Always buckle up an empty booster seat (or take it out of your vehicle) so it doesn’t become a projectile that could hurt someone in a crash or sudden stop.
  • In Ontario, a booster seat is required until your child is:
    • Eight years old,
    • 36 kg (80 lb.), or
    • 145 cm (4’9”)

Even if your child is eight years old and/or 80lbs, they may not be tall enough for a seat belt alone – it is safest to keep using the booster seat for as long as they are within their height (and weight) limits of the seat.

Is your child tall enough for a seat belt alone?

  • Check to see that when sitting up straight and against the back of the vehicle seat:
    • Your child’s knees bend over the edge of the seat, with his/her feet on the floor
    • The lap portion of the seat belt fits snugly over his/her hips (not over his/her stomach)
    • The shoulder portion the seat belt crosses over his/her shoulder (not over his/her neck) and chest
      • Make sure your child can sit properly for the entire trip.