Each of these FDA-registered, 3-ply respirator face masks features cushioning with an adjustable metal nose piece for comfort. Two strap design helps provide a secure seal. One size fits all. Filter safety masks can be used in the following professions and industries: emergency medical services, fire departments, law enforcement, salons and spas, commercial buildings, construction, design & construction, food processing, food safety, general manufacturing, heavy infrastructure, mining, oil & gas, transportation, etc. Note: Not a NIOSH Product.