Portable fans a breath of fresh air in sweltering summer heat english.kyodonews.net

"We have many products to fight heat, such as foldable fans, cool sprays and cool bandanas, but this year the portable fans are the most popular among such items.
(Portable fans on display at a store of Tokyu Hands Inc. in Tokyo on Aug. 9, 2019.)
Interior goods retailer Franfran Corp. has developed new models of portable fans with reduced wind sound and more power after selling over 100,000 fans from April to August last year.
"The popularity of the portable fans reminds me of the mini-heater or mini-humidifier for use on desktops that were a hit in the winter season," Shimomura said.
Also the recent boom of outdoor activities, such as camping, music festivals and comic-related events called Comiket, are expected to further boost demand for portable fans, shop operators say.