She was navy blue and was frothing black ... full-face snorkel masks. Related stories Dead space in the mask Although doctors have been unable to confirm what caused her condition, the design ...

Rattray, a former business student at the University of Pennsylvania’s Wharton School who enjoys “building things,” set out to design ... comfort in face shields and masks but still felt ...

All full-face masks share essentially the same design: made of hard plastic and lined with a soft silicone flange, the masks form a snug seal around your entire face, and have a two-way breathing ...

According to a 2021 Geohealth study, “face ... design gives you extra comfort, perfect for ergonomic fitting. Vida offers six colors in recyclable KF94 masks, including white, gray, black ...