PEUGEOT 108 Handbook page 132

Child safety
"RÖMER Duo Plus ISOFIX" (size category B1)
Group 1: from 9 to 18 kg
Is installed only in the forward facing position.
Is attached to the anchorage rings A and the upper anchorage ring B,
referred to as the top tether, using an upper strap.
three seat body angles: sitting, reclining, lying down.
We recommend the lying down position.
this seat can be used on seats not equipped with ISOFIX mountings.
In this case, it must be attached to the vehicle's seat using the three-point seat belt.
Adjust the front seat of the vehicle so that the child's feet do not touch the backrest.
Follow the instructions for fitting child seats contained in the seat manufacturer's installation guide.
130