Britax ADVOCATE 70 CS - Manual (Page 66)

64
Care and Maintenance
Cleaning the Buckle
If your child eats and drinks while in the child seat, you will need
to check the buckle periodically and rinse out any accumulated
debris.
Remove the Buckle
2 Turn the buckle webbing
and slide it between buckle
positions.
1 Unbuckle the harness.
Remove the belly pad and pull
the buckle through the cover.