Oly-Fun the everything material is one of the easiest most versatile materials you will ever find. You can sew it glue it staple it pin it or tie it. You can write on it paint it embellish it stamp it or stencil it. You can scissor rotary or die cut it. The only thing it won t do is fray tear or fade so don t bother hemming it. Oly-Fun non-woven material can be used for a variety of projects. As a non-woven it is similar to the material used in surgical masks however Oly-Fun has not been tested or approved for medical use or filtration capabilities. A one-ply sheet of Oly-Fun is a non-woven 65GSM whereas commercially manufactured surgical masks are typically made of 3-ply 25GSM non-woven with additional filtration added. Please note homemade masks are not a substitute or replacement for certified medical equipment.