10PCS KN95 Disposable Face Masks, Disposable Respiratory Mask Face The elastic fastening straps are welded to the mask and do not tear. M-shaped nose clip, dust mask is cut in 3D fits almost any size/shape face, High elastic ear strap has enough elasticity to make a good seal, not tight, The valve is flexible, and the breath resistance is slow, it can be also molded for proper fit. 4 Layer Protection,Dust Masks Disposable comes with activated carbon layer,non-woven fabric layer,double static absorption cotton and soft non-woven fabric layer. Can filter out fine dust,pollen,allergies and almost 95% particles in the air. One e Size Fits All - With the standard size of the disposable 4-layer face masks are super suitable for adults and children. The masks are designed to keep away smoke, debris, residue and dusts from you. Great value for Cleaner, Builder, Farmer, Doctor, Student, Nurse.Bulk KN95 Disposable Mask website:http://www.mask-trade.com/mask/kn95-disposable-mask/