Made of five layers of high quality filters to protect against airborne particles. The top and bottom layers are soft but sturdy non-woven fabric to prevent irritation. The 2nd layer is a 40g hot air cotton, and the 3rd & 4th layers contain 25g Melt-Blown fabric, which will filter out more than 98% of harmful airborne bacteria. When worn, the mask has a three-dimensional shape that prevents the mask from touching your mouth & nose. The mask folds down flat with a seam in the middle for convenient packing and it comes with elastic earloops and an adjustable wire to fit the contours of your face.