Ford F-150 2021 Supplemental Owner's Manual page 22

E142596
E142597
If the booster seat slides on the vehicle
seat upon which it is being used, placing a
rubberized mesh sold as shelf or carpet
liner under the booster seat may improve
this condition. Do not use any item thicker
than this under the booster seat. Check
with the booster seat manufacturer's
instructions.
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202008, First-Printing
Child Safety
19