Graco ARGOS 70 ELITE Manual Del Usuario página 53

19.0 Removing or Re-attaching Back Support
To use booster seat WITHOUT back
support, remove harness straps if attached
(see section 15.0 Harness Removal, p.42-46)
then continue with the following steps:
1. Detach 2 lower elastic straps from rear of
seat as shown .
2. Detach elastic strap from the hooks on the
seat pad as shown. Repeat on other side .
53