This set contains four STURM NANO-SILVER MASKS∶ A soft, washable and reusable face covering made with anti-microbial, anti-friction, nano-silver infused fabric thathas also been shown to have anti-bacterial benefits for the skin. With a comfortable fit, each face mask features adjustable ear straps, an adjustable nose bridge and the Sturm logo. All masks are not for medical use, but rather as a safety device for personal, non-professional use. Please note that this item cannot be returned.