Vauxhall CASCADA Owner's Manual page 68

66 Seats, restraints
IL : Suitable for particular ISOFIX restraint systems of the 'specific-vehicle', 'restricted' or 'semi-universal' categories.
The ISOFIX restraint system must be approved for the specific vehicle type.
IUF : Suitable for ISOFIX forward-facing child restraint systems of universal category approved for use in this weight class.
X : No ISOFIX child restraint system approved in this weight class.
* : Move the respective front seat ahead of the child restraint system in one of the foremost adjustment positions.
** : Remove respective rear head restraint when using child restraint systems in this size class. 3 45.
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 18 kg.
D – ISO/R2 : Rear-facing child restraint system for smaller children in the weight class up to 18 kg.
E – ISO/R1 : Rear-facing child restraint system for young children in the weight class up to 13 kg.