Gas Mask C50 Avon Protection First Responder Respirator Gas Mask Size SMALL. We are not sure these masks have been used however they do have a white residue on the rubber. Masks do not come with any original packaging, box, or carrying case. Masks may show dust and/or surface scratches from storage and transportation. No clear outsert, filter, additional parts or accessories included. Please review photos carefully for condition details and what’s included. Please see pictures for details. Also, feel free to ask any questions pertaining to this item. International Buyers – Please Note. We strive to describe every item to the best of our ability. We are not experts on many of the items offered. Customer Service is our utmost priority. All items guaranteed to arrive only to the extent of the condition (cosmetically and functionally) stated in the description.