A face mask with all the attributes you're looking for in one trusty accessory.  Water repellent fabrication with 3 layers of lining including a poly padding to keep particulates out.  If that wasn't enough there's also a removable filter with 5 layers of protection including an activated charcoal sheet.  Washable, Reusable, Adjustable with vent for easy breathing.

Often purchased together with : 6 Pack Replacement Filters

Available in sizes: Adult One Size 

• Washable
  
• Reusable
  
• Water repellent
  
• Adjustable ear straps
• Replaceable 5 layer filter
  
• 1 filter included
  
• Replaceable filters sold separately (change every 4-5 uses)