During my pregnancy with my second son in 2006, I found the 3 hours per day travelling on public transport so unbearable that I decided to carry a folding fan with me, this lead me to turn my simple idea into something bigger and a way for All to keep cool you can read my full story here- http://www.prlog.org/11835229-super-cool-summers-on-the-horizon-thanks-to-the-black-white-fan-company.html