BREATHABLE: Our dust mask is made of cotton material 2 layers, breathable, windproof and comfortable to wear. The mouth mask is washable and reusable. no filters EAST TO WEAR: Elastic ear hook for easy wear and fall off, suit for most people; great for outside, cycling, shopping; it’s also a good ornament and fashionable item; as a good gift for families, friends, lovers ONE SIZE FITS MOST : The size of mouth mask is 5.1 x 7.1cm, ideal for unisex men and women, girls and boys. It has good resilience and stretch ability, and is soft and light. MATERIAL: Made of high grade cotton. Soft, washable, breathable, reusable, foldable and portable.