Disclaimer: Our masks are non-medical grade. This is our original design. This mask with the four strap ties provides the best fit and facial coverage for any adult size head. No more worries of elastics being too loose or too tight, the adjustable ties provides you with the best comfort and fit. Our masks are made with a 6 panel construction to ensure it contours each persons face, and leaving minimal gaps. Outer and inner panels are made with 100% combed cotton to provide droplet absorbency and super soft comfort. In between is a layer of non-woven poly interfacing to provide filtering and shape retention. Strap bindings are 100% cotton. Made in Canada. Recommended care: Machine wash warm in mesh delicates bag, hang to dry.