These reusable face masks are the new bees knees (but for your face). They're made in the UK with laboratory tested fabric, fancy right? Each face mask sports a 4-ply cotton-blend fabric. 2 layers are good, 3 layers are better, 4 layers are the best! The first layer is devoted completely to your comfort, the two middle layers provide extra filtration and the final outer layer provides additional protection. They also come with elastic bands to secure the mask, perfect for comfort and placement.