The protection you want in a style that you might not expectuses a dynamic activated charcoal cloth to filter the worst of urban pollutioncomes in one size and is easily and quickly adjustable for a comfortable fitwraps round the face in a bandanna scarf style giving additional protection to your face and neckthe scarf is made from 100 cotton and the filter is treated to allow both to be fully washabledesigned to remain effective for 6 months in normal urban conditions