My everyday after work type thing is, Running Shoes helps with breathing and running type of clothes.
It makes a difference with the heat. Were only mid 90's here but have water on 3 sides of us so humidity is really high.
I always wondered if a running style of shirt could be done up for working, It might cost a little more, but might be worth it
The JAGUAR MX-2 ETM @ cross-american.com