... easy-to-use and comfortable elastic ear-loop or ties;3, different style, weight, package are available.ColorwhiteSize12x13cmMaterial and weight30gPPx60gMBx210gCStyleMedical, flat ... , ES purifying, active carbon, solid, cup, valve, spongePacking20pcs/box, 16boxes/ctncertificateNELSON LAB, BFE>99%, CE EN ...