Review on High-Performance Flame Retardant Polyurethane Shielding Polyester Taffeta: Ultimate Protection and Safety by Leon Johnsson

I am a 61 year old retired nurse with glasses and was thinking about buying this mask but didn't think of it. My training reminds me that gravity pulls everything down, even in an open mask. I would rather wear a mask that is open at the bottom than at the top. However, product photos of models wearing baseball caps covering the top of this mask have made me feel more confident about the safety of the mask.