3 Ply Face Mask Elastic Earloop CE ISO Approved Used in Hospital or by ... Loop Tie On 3 Ply Face Mask Tie On or Elastic Earloop Disposable Face MaskCE ISO ApprovedUsed in Hospital or by ... : 17-18cm5, Tie On and Ear Loop (round or flat elastic)6, Package: 50PCS/INNER BOX, 500PCS/CTN, 1000PCS/CTN, ... encased in 3 layers of non-woven fabrics2, With elastic ear loops of straps and a nose piece of plastic ...