Face Mask Reusable Ventilation Filter Active Outdoor ProtectionReusable Neoprene Anti Pollution Face Mask with Five Layer Filtration Stay prepared during daily travel using this Face Mask, built as a Reusable design that supports steady airflow through its Ventilation system. The multi layer Filter helps reduce exposure to dust or smoke during Active tasks outside. This Outdoor Protection option fits most adults at 23 14 cm (9 5. 5 in) and secures around the face using adjustable straps suitable for cycling