Last year I damaged my favourite motorcycle helmet, an Arai Vector. Arai is a premium helmet which simply fit me like a second skin. The bits I damaged were material to safety and are parts that are required for the helmet to function correctly.
As we seem to live in a throw away era I assumed I would have to replace my helmet. I was surprised to discover that all parts aside from the basic shell are available and are modest in cost. Yesterday I ordered the parts on-line and just received confirmation of shipping. Well done Arai!