UNIGLOVES 4ply Surgical Mask, Earloop, Blue. Packing: 50pcs /box. Special soft inner layer that is gentle to skin. Soft and latex free round elastic bands for maximum comfort and reduce risk of skin irritations. Filtration (Medical Grade):
More than 99% BFE (Bacterial Filtration Efficiency),
More than 99% PFE (Particle Filtration Efficiency), More than 99% VFE (Virus Filtration Efficiency). Tested by NELSON LABORATORIES, LLC , USA