Life-saving and teaching apparatus; articles of headgear, including helmets; crash helmets; cyclists helmets; helmets; helmet cases; helmets for motorcyclists, including crash helmets; helmets for use in sports; protective helmets; riding helmets; safety helmets, including industry safety helmets; specialist helmets including an airbag for motorcyclist safety protection; parts and fittings for any of the foregoing; all being goods included in this class