With PFE (Particle Filtration Efficiency), BFE (Bacterial Filtration Efficiency), and VFE (Virus Filtration Efficiency) tests passed which are capable of filtering out over 99% airborne bacteria, virus and particles
Soft rubber cords without hurt to ear.
Individually packaged per sheet
Size: 17 x 9.5 cm / 6.7 x 3.75 inch (adult size)