Toyota PRIUS Owner's Manual page 57

Mass group (ECE R44 only)
■
This Mass group table is required when confirming the child
restraint system compatibility. Confirm in accordance with the child
restraint system compatibility table. (→P. 62, 70).
The child restraint system which conforms to the standard of ECE
R44 is categorized into 5 groups according to the weight of the
child.
Mass group
Group 0
Group 0+
Group I
Group II
Group III
*
: The age range is a standard approximation. Choose according to the
weight of the child.
PRIUS_OM_OM47A31E_(EE)
Child weight
until 10 kg (22 lb.)
until 13 kg (28 lb.)
9 - 18 kg
from 9 months - about 4 years
(20 to 39 lb.)
15 - 25 kg
(34 to 55 lb.)
22 - 36 kg
(49 to 79 lb.)
1-2. Child safety
*
Reference age
about 9 months
about 1.5 years
from 3 years - about 7 years
from 6 years - about 12 years
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