Skull Gas Mask Respirator Sterling Silver Ring* Note: This ring is made to order, please allow 10 15 working days of crafting time. This exaggerated and delicate ring is crafted from sterling silver. A skeleton is wearing a gas mask, or respirator. They can be a symbol of death, destruction and war. They may also symbolize revolution. The gas mask is meant to keep you alive if there are toxic fumes around. If you need to customize other sizes, please feel free to contact our customer service.