Product Description 20pcs per box (All individual packages) M Size: 16.7w x 14.3h cm S Size: 16w x 12.2h cm XS Size: 13.5w x 10.5h cm All production process are manupulated in Hong Kong. Dustproof, water proof and comfortable. Specially designed for Hong Kong people to wear. Breathable for wearing a longer period. No latex No glass fiber Qualifications BFE & PFE 98% ASTM LEVEL 2 AC:2019 Type IIR EN14683:2019 ISO 14644-1 Class 8