... face mask,earloop & tie-on; 9.0cm X 17cm;Low breathing resistance with high filtration efficiency.50pcs/box,2,000pcs/ctn. Surgical Face ... Masks3-Layer Face Mask,Elastic Ear Loop and Tie-on type;Specifications:9cm X ... /sqm, PP 25g/sqm; 3).Comfortable elastic ear loops,;Adjustable ties,dual head straps for tight ... ,electronics,beauty salon,etc. Surgical face mask