Details about 50 3-layer Disposable Face Mask Medical Use Anti Bacteria, Dust, Flu Use. 50 3-layer Disposable Face Mask Medical Use Anti Bacteria, Dust, Flu Use 20pcs Blue Disposable Mask Anti-dust 3 Layer Ear-hanging Safety Protection. $25.75. $27.99. Free shipping Specifications: Type: non-woven filter paper. Mask style: hanging ear