Cadillac 2015 ATS Owner's Manual page 89

3-42 Seats and Restraints
ISOFIX Size Class and Seat
Device:
A - ISO/F3: Forward-facing child
restraint system for children of
maximum size in the weight class 9
to 18 kg.
B - ISO/F2: Forward-facing child
restraint system for smaller children
in the weight class 9 to 18 kg.
B1 - ISO/F2X: Forward-facing child
restraint system for smaller children
in the weight class 9 to 18 kg.
C - ISO/R3: Rear-facing child
restraint system for children of
maximum size in the weight class
up to 13 kg.
D - ISO/R2: Rear-facing child
restraint system for smaller children
in the weight class up to 13 kg.
E - ISO/R1: Rear-facing child
restraint system for young children
in the weight class up to 13 kg.