Forget all other fans. If there's one Japanese invention I've desperately needed in my life, it's a fan jacket. Given we’re all sweating through the ugliest summer in years, I took the plunge and bought one for myself.
First developed in the early 2000s by a former Sony engineer, fan jackets were built to help Japanese construction workers and people working outdoors stay cool. But fan jackets are now a common sight right across the country. Fitted with four battery-powered fans, they continuously circulate air around your body to help you survive hot and humid summers.