CITROËN C3 PICASSO Handbook page 106

Child safety
ISOFIX child seat recommended by CITROËN and approved for
your vehicle
This child seat can also be used on seats which are not fitted with ISOFIX mountings. In this case, it must be attached to the vehicle seat using
the three point seat belt.
Follow the instructions for fitting the child seat given in the seat manufacturer's installation guide.
104
"RÖMER Duo Plus ISOFIX"
(size category B1)
Group 1: from 9 to 18 kg
Installed only in the forwards facing position.
Secured to rings A, as well as the third ring B, called the TOP TETHER,
using the upper strap.
Three seat body angles: sitting, reclining, lying.