Opel Cascada Owner's Manual page 69

Permissible options for fitting an ISOFIX child restraint system
Weight class
Group 0: up to 10 kg
or approx. 10 months
Group 0+: up to 13 kg
or approx. 2 years
Group I: 9 to 18 kg
or approx. 8 months to 4 years
Group II: 15 to 25 kg
or approx. 3 to 7 years
Group III: 22 to 36 kg
or approx. 6 to 12 years
Size class Fixture
E ISO/R1
E ISO/R1
D ISO/R2
C ISO/R3
D ISO/R2
C ISO/R3
B ISO/F2
B1 ISO/F2X
A ISO/F3
Seats, restraints
On front passenger seat
X
X
X
X
X
X
X
X
X
X
X
67
On rear seats
IL *
IL *
IL *
IL *
IL *
IL *
IL, IUF**
IL, IUF**
IL, IUF**
IL
IL