The STURM NANO-SILVER MASK is a soft, washable and reusable face covering made with anti-microbial, anti-friction, nano-silver infused fabric that has also been shown to have anti-bacterial benefits for the skin. The material and technology was chosen because of its soft feel and lightweight, breathable fabric that prevents glass fogging and avoids inflammation-inducing chafing against the skin. With a comfortable fit, the 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. DETALS 1 Lightweight and breathable material that is also moisture wicking and odor fighting Comfortable fit with adjustable ear loops and nose bridge Fabric offers UV protection and anti-fogging when wearing glasses Made with Aerosilver™ fabric: 93% polyester with nano-silver infused within fiber, 7% span for elasticity Three-layer fabric as advised by the World Health Organization Machine wash at 30 degrees; hand wash and air dry recommended Certified ECO PASSPORT by OEKO-TEX®