Coronavirus: Brussels hospital turns snorkelling masks into respirators
Smart Snorkel Full Face Mask
3D-printed valves convert snorkel gear into ventilator masks for coronavirus patients
Amazon.com : Full Face Snorkeling Mask, Foldable Scuba Diving Swimming Underwater Easy Breath Snorkel Mask with 100% Anti-Fog Dry Top Set/Support Add Mini Oxygen Tank for Youth & Adults Orange : Sports