Made from cotton, each mask fits comfortably with adjustable elastic straps. These masks are tested to a KN90 standard and filter at least 90% of airborne particles down to pm2.5. TheyÂre able to filter particles including general pathogens and air pollution.: Dimensions:
140 mm (W) x 230 mm (L): Material:
Cotton: Features And Benefits:
These masks are tested to a KN90 standard and filter at least 90% of airborne particles down to pm2.5.:
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