Lexus GS 350 Owner's Manual page 72

Types of child restraints
Child restraint systems are classified into the following 5 groups according to the
regulation ECE No.44:
Group 0:
Group 0+: Up to 13 kg (28 lb.) (0 - 2 years)
Group I:
Group II:
Group III:
In this owner's manual, the following 3 types of popular child restraint systems
that can be secured with the seat belts are explained:
Baby seat (infant seat)

Equal to Group 0 and 0+ of ECE
No.44
Junior seat (booster seat)

Equal to Group II and III of ECE No.44
GS350_300_GS F_OM_OM30J17E_(GE)
Up to 10 kg (22 lb.) (0 - 9 months)
9 to 18 kg (20 to 39 lb.) (9 months - 4 years)
15 to 25 kg (34 to 55 lb.) (4 years - 7 years)
22 to 36 kg (49 to 79 lb.) (6 years - 12 years)
1-1. For safe use
Child seat (convertible seat)

Equal to Group 0+ and I of ECE
No.44
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