• Filter specification: More than 90% of filtration efficiency. Tested with NaCl aerosol at inhalation flow rates of 95 liters/min with a particle size of 0.6 micron.
• Remove filter before wash / Filter is not washable / Wash mask often / Hand wash
• Cotton bag and a spare filter included
• Made in Britain with care
PLEASE NOTE: this is not a medical grade face mask. All face masks and filter sets are non-returnable for hygiene reasons. The UK government advises that face masks should not be worn by those who may have breathing difficulties whilst wearing it.