... : 17-18cm tie On and Ear Loop (round or flat elastic)6.Package: 50PCS/INNER BOX, 500PCS/CTN, 1000PCS/CTN, 2000PCS ... filter encased in 3 layers of non-woven fabrics2, With elastic ear loops of straps and a nose piece of plastic ... BOX, 500PCS/CTN, 1000PCS/CTN, 2000PCS/CTN, Package Includes: 50pcs Medical Ear-loop Respirator Face Surgical Mask