| http://www.w3.org/ns/prov#value | - FIELD OF THE INVENTIONThe present disclosure relates to a helmet including a shield which can open and close an opening formed at a front side of the helmet, more particularly, a helmet including a detachably attached holder which is inserted through both sides of a helmet main body and by which the shield is clamped such that the shield can be rotated vertically.BACKGROUND OF THE INVENTIONA rider
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