This 2-layer face mask is safe and comfortable to wear. It measures 9 1/2″ X 5 1/2″, with stretchable and adjustable ear loop, fitting most adults. It is made of high quality of materials: 85% polyester, 10% cotton and 5% spandex. A piece of filter can be inserted between 2 layers. The mask is designed to protect you from dust, germs, and infectious disease. Custom logo and brand name are acceptable. Rush service is also available.