Hanya 4-Ply String Extension Embroidery Face Mask with Scrunchie SetIn compliance with WHO, our Hanya masks are safe to wear with and without filters. It has 4 separate layers, with one cotton filter layer sewn directly inside the masks. Satin silk on the inner layer to avoid mask ne (mask acne) because it is soft to our skin. They are sturdy, comfortable, lightweight, and made from cotton poly blend, with a pocket for adjustable filter. All our masks come in a color matching pouch, and when you are done wearing the