Nuna aace Mode D'emploi page 21

Your booster has two
seat back positions as
shown, fully upright (18)-
1 and reclined (18)-2.
Use without
Lower Anchors
1
The back of the booster
seat MUST fit tightly
against the back of the
vehicle seat back when
not using the Lower
Anchors. (19)
2
Adjust or remove the
vehicle headrest as
needed to remove
interference.
If you remove your
vehicle headrest, be sure
to stow it in a secure
place; check your vehicle
owner's manual.
3
Do not use with seat back
beyond position 2. (20)
The front of the booster
MUST NOT hang over
the front of the vehicle
seat.
19
AACE instructions
1
2
18
19
20