Britax Safe N Sound Compaq MKII Instructions For Installation & Use page 21

Next type of restraint that can be used in the car for your child.
When your child has outgrown this seat, you can use:
• A convertible booster seat with integrated harness
until approximately 4 years old and then as a booster
seat with vehicle lap-sash seatbelt or seatbelt and
compatible child harness until approx. 6 to 8 years of
age.
• Or you can use a dedicated booster seat
with vehicle lap-sash seatbelt or seatbelt and
compatible child harness until 6 to 8 years of age
(eg: Safe-n-Sound Hi-Liner) or until 8 to 10 years of
age (eg. Safe-n-Sound Encore 10).
• Or a harnessed child restraint suitable for
children approximately 6 months to 8 years old
(eg: Safe-n-Sound Maxi Guard)
SHOULDER HEIGHT MARKERS AND
THE NEXT STEP
Instructions for Installation & Use
21