As temperature rises, race for cool masks heats up
(WorldNews South Korea)

By Bahk Eun-ji Consumers are once again complaining about a shortage of face masks ― this time a new type that is cheaper and allegedly easier to breathe in than ones already available, and is primarily designed to block exhaled water vapor. Mask manufacturer Welkeeps began sales of `saliva droplet prevention` masks Monday at 9 a.m., but its inventory was sold out in less than 20 minutes. A new type of `saliva droplet...