This is a high quality surgical mask. Mask of choice for hospital and medical use and the ideal mask for higher protection in general settings during a pandemic. >=99% BFE, 120mmHG fluid resistance High 99% density meltblown non woven fabric and good quality soft nonwoven inner layer Packed in Sterile packages of 10 masks each, 10 packs per box Manufactured by a reputable, established and dedicated medical consumable factory that is a supplier of choice by hospitals and pharmacies in China. Chinese Standards: YY0469/EN14683 Type IIR