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.
Size: 14.5 x 9 cm / 5.8 x 3.5 inch (Small Size for Ladies & Children)