I might be overdoing it by ordering this shirt but I would do anything to reduce heat. Ministry of Supply had a kickstarter project that was very successful. It was to manufacture a shirt with a unique fabric used by NASA for astronauts. It absorbs heat when it’s a hot weather then when you’re in a cold place, like entering a building with air conditioning it seamlessly extracts that heat.
So at most times you will be having a balanced weather because of the technology used. The shirt cost me around $100 and is well on its way, will write if it actually makes a significant difference on a day to day bases or not.[Website]