Reusable and eco friendly face masks made of high quality anti-bacterial fabric. Outside layer is made of antibacterial fabric and inside layer is a nice comfortable cotton fabric. Watch this video to see the concept of anti-bacterial fabrics, similar to the ones used for sewing these masks. Washing masks more than 30 times could reduce its anti-bacterial effectiveness. Instead of machine washing, you may also sanitize the masks by sunning or ironing masks on low setting.