Size: 9.5*17.5cm for adult 9*14.5cm for child Main components: non-woven fabric + melt blown fabric Style: elastic earloop Features: filtration efficiency â?§ 95%/98% Specification: 50pcs/box, 60boxes/carton NW: 12 kgs GW: 13.2 kgs Carton size: 57.5*42*45cm