21
The headrest and backrest adjust in 3 dierent ways. 
The three adjustments are independent of each other to 
ensure the best t for kids of dierent sizes. Take a few 
minutes and try out dierent adjustments until you nd 
the one that ts your child best. Kids grow quickly. Make 
sure to check the adjustments every 3 months. As your 
child grows, you will need to make the headrest and 
backrest taller, and widen the backrest.
Some kids prefer a narrower backrest, others like more 
room for their arms. Let your child tell you what is most 
comfortable for them. 
IMPORTANT: When the headrest AND backrest are 
both in their highest positions AND the red shoulder 
belt guides are below the child's shoulders you must 
STOP using this as a highback booster.
Refer to page 33 for backless mode conversion.
HIGHBACK MODE:
ADJUSTING THE SEAT TO FIT YOUR CHILD