Air mask that removes viruses and odors, lasts for 2 months. - Model: E.A MASK ES-020 - Type: Air mask - Function: Virus and odor removal - Usage time: Lasts for 2 months - Ingredients: CIO2 (chlorine dioxide) - Country of manufacture: Japan Air mask name holder also lasts for 2 months! Thank you for viewing. After purchase, all items are new and unused, but the lid of the box (for taking items in and out) is slightly raised, so please understand this before purchasing.