Reusable cloth masks that are cooled and sold in vending machines are proving popular in northeastern Japan amid growing fears that wearing masks to prevent the spread of the novel coronavirus in the summer could cause breathing difficulties.The masks are stored at 4 C, the lowest temperature setting in two vending machines installed in Yamagata Prefecture, and around 400 are sold daily for 690 yen ($6.50) a piece, even though they do not stay cool for long.Knitwear manufacturer Knit Waizu, which is based in the town of Yamanobe in the prefecture, produces the masks as it wanted to create s…READ FULL ARTICLE