Tecomen disposable surgery 3-Layer face mask is made of non-woven and its latex free. Stay healthy and safe when at work . With hidden nose strips, and a bendable metal nose strip that freely adjust to face shape and nose height for a better fit. Can be used for: â?? Fog â?? Haze weather â?? Gray sky â?? Fog weather â?? Dust weather â?? Now weather â?? Building site â?? On Street â?? In Public â?? In workplace â?? In hospital Three soft layers: Exterior: Non-woven, Middle: Melt blow nonwoven, Inner layer: Skin-friendly Non-woven fabric BFE>98%; Fluid Resistance: 120 ; Filtration layer: 40GSM Size of masks: 17,5cm x 9,5 cm 1box: 50pcs Certification: CE; FDA; ISO