Mostly 100% cotton Soft elastic ear loops Made in the USA. Washable & Reusable Machine Wash Gentle. Lay flat to dry (to preserve the elastic) Iron on low temperature if needed Disclaimer: Our masks are not medical grade. We make no claims regarding their use. Our masks are not FDA approved. Our masks will not, if used alone, prevent the transmission of disease. Our masks are handmade items made with purchased fabric.