The Be Perfect reusable mask is designed to protect the face from infections and dust, it allows you to trap up to 99% of small particles and has an anatomical shape that allows you to ensure a perfect fit to the face without discomfort. The mask is reusable; for reuse, the mask must be washed with soap or detergent, treated with a steam generator or an iron, and then ironed (in case the mask remains wet). Number of layers: 3 Composition: 100% cotton Size: 18 * 8 cm