Vauxhall Astra Owner's Manual page 117

Child restraint sys tem ,
Vauxhall child restraint seat
without transponder
Modular sy stem for various weight ranges:
3
z Weight class I: for w eight of 9 kg to
18 kg; it is ad visa ble only to use weight
class I for weig hts of 11 kg and above.
Always install facing direction of travel.
z Weight class II: for weight of 15 kg to
25 kg . Always install facing direction of
tra vel.
z Weight class III: For weight of 22 kg to
36 kg . Always install facing direction of
tra vel.
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