Japan’s hot and humid summers have led to many great ideas and inventions to try and stay cool and beat the summer heat. The latest is from Japanese entrepreneur Hiroshi Ichigaya, and is air conditioned clothing. Ichigaya is selling jackets, shirts and pants fitted with battery-powered “personal cooling systems”. Small fans circulate so much air over the wearer’s body that a 31C room feels comfortable, according to America’s ABC News, which has tested the clothing. According to ABC News, Ichigaya is selling to 1000 companies and even getting requests from the Prime Minister’s office for half a million jackets.