... according to customer demand8, Tie On and Ear Loop (round or flat elastic)9, Standard mask size: 17.5cm*9.5cm Standard ... Ear loop Length: 17-18cm10, BFE95%, BFE99% filter paper ... , 1000PCS/CTN, 2000PCS/CTN, Package Includes: 50pcs Medical Ear-loop Respirator Face Surgical Mask Conforms to EN14683:2005 type II standards with CE0197 ...