Japan's extreme heat fuels fashion, gadgets to keep cool

Japan's battery‑powered Kuchofuku cooling vests are surging in popularity as record heat waves drive demand for wearable cooling technology.

Originally made for construction workers, these fan‑powered garments now dominate sales in Tokyo workwear shops and have expanded into collaborations with global fashion brands, sports gear and everyday casual wear.

As Japan faces increasingly frequent "kokushobi" (cruel heat) days, consumers are turning to a wider range of cooling innovations — from portable fans to neck coolers and ice‑making sprays. With the global fan‑powered clothing market projected to reach $8 billion by 2034, retailers say staying cool has shifted from comfort to necessity.