Graco ISPB004HB Owner's Manual page 12

Step 6.
Attach elastic strap as shown 3 .
3
Step 7.
Flip seat over and insert the fabric from the head
support underneath the fabric on the lower back support
4
as shown
To make insertion of fabric easier, slide the upper and
lower back pieces apart by squeezing the red adjustment
button.
4
.
3
12