The 3-ply mask features soft non-woven, absorbent fabric in the inner side for comfort. The outer layer is made of non-woven, fluid-resistant fabric & the middle layer has melt-blown fabric filter for better filtration of air. Disposable masks are recommended to be worn for a maximum duration of 8 hours at a time. Use fingers to gently lift each loop on the right and left side of the face masks to open the loops and put on the mask around the ears.