These Black Masks are too small for my average sized head. The loops make my ears stand out and hurting :-( May only be suitable for children in size, BUT should not be used because the material is too impervious to air flowing so that the mask gets sucked flat into your face when you take a breath. It is NOT working as a air-filter, it is like a breathing barrier. In short, to small and won't let enough life-sustaining air through. However, the black material matches my tuxedo and that's all the positive I can think of.