I felt challenged to crochet an mask mate ear saver. So here is the elegant mask mate ear saver, crocheted for a nurse, and it is 100% cotton. I didn't put plastic buttons on it and didn't sew it with any thread other than 100% cootton kind. Because I heard that some hospitals require their nurses wear nothing but cotton. Plus I heard that Covid-19 lives up to 72 hours on plastic surfaces.