Activital Duct Mask, Gray, 3-piece SET Urethane Mask, 2244 yen I bought these for work because they don't fog up my glasses. They're washable, which is convenient. I recommend washing them before the first use. They're also good for jogging and sports clubs. Recommended for those who wear glasses. Ear-loop mask with a double filter - Model Name: Activital DUCT MASK, 748 yen - Exhaust duct with 2-layer filter - How to use: Ear-loop type #SportsClub #Work #GlassesWearer #ProtectiveGear #MaskWithDuct #UrethaneMask #Jogging #Worksite #WashableMask