3PLY-4 PLY (Medical Use)
1. Non-Sterile Disposable with a leak-proof coated nose clip and non-latex ear loop elastic
2. Size: 178 mm x 98mm
3. High Bacteria Filteration. Three Layer with Non-woven fabric Middle Layer. Outer Layer Bacteria Filteration efficiency >95%, inner layer bacteria filteration>80%. Low Breathing Resistance Delta P
