3-layer disposable mask: Non-woven fabric, melt-blown fabric, and heat-sealed cotton. For Single use Only. Hidden Flexible nose wire for an adjustable fit. One Size Fits All. One box includes 10 PCS. DISCLAIMER This product is not a medical device and is not a substitute for social distancing and practicing good hygiene, hand washing, and not touching your face. Smart Scholars makes no claims about the medical benefits of using this product.