This fitted pocket face mask is modified from the Olson design and has a pocket that allows you to add and remove a filter for additional protection. There are also 8 sizes to work with. #Instructables #sewing #health #cleaning #pattern Diy Sewing Pattern, Sewing Patterns Free, Quilt Sewing, Sewing Fabric, Easy Sewing, Dress Patterns, Coat Patterns, Clothes Patterns, Serger Sewing