Our soft and comfy masks are made with a double layer of 18 oz. premium cotton. We have designed our masks for function, and durability, as well as comfort. We use soft, stretch ribbing for ear loops, allowing for extended wear. Each mask features an inside pocket, which allows you to add your own disposable filter, if desired. These are machine washable and reusable. Dyes are set with a fixative to reduce color fading.