100% woven cotton outer layer. Filtering non-woven cotton mid layer. 100% soft woven cotton inner layer. Reusable, 3-ply fabric mask. Conforms to standards GB18401-2010B. Breathable and shaped to fit snugly on the face and under chin. Bendable and adjustable ‘nose wire’ to help prevent glasses from ‘fogging’. Secured with adjustable elasticated ear loops. Printable surface. Machine washable at 60°C, can be tumble dried. Pocket for optional PR797 Activated Carbon Mask Filter (sold separately). Remove any filter prior to washing. Non-returnable. Disclaimer: This face cover is designed to aid defence against the spread of infection. It makes no assurances that it can prevent transmission or infection of disease or viruses. It is not a medical or clinical mask and should not be used under any circumstances where infection level is high or it could be exposed to high level heat sources or combustible substances. Dimensions: 15 x 13 cm. This mask filters 98% of particles with an air permeability score of 131 l/m/s.