3 Layers Material:Equipped with Unique 3 Layers Non-woven Fabric, Allow You Breath Freely and Comfortablely While Provide the Maximum Protection
One Size Fit Most:Made of the Same Standardized Size of 17.5*9 CM / 6.89*3.54 Inches, Which is Suitable for Most Adults and Children
Waterproof Design:The Outermost Layer Fabric is Made of Waterproof Material, Which Filters Out Most Unhealthy Substances
Comfortable Easy To Wear: Equipped With Strong Soft Highly Durable Earloops, Eliminate the Pressure To Your Ears
Wide Application:Great for Protecting You Against Dust, Sand or Smog. Perfect for House Cleaning, Nail Salon, Painting, Factory and Construction Use etc,??????????????????