Has anyone ever used a cooling jacket for working outside?

Hi, there. Last year’s drought and this year’s record hot weather has got me considering acquiring a cooling jacket I can wear while working outdoors. I’m wondering a couple things:

  1. What do people do to keep themselves cool while working outdoors in the direct sun?
  2. Has anyone used a cooling jacket before for this purpose and would you share your experience of it?
  3. If you use a cooling jacket, do you have a recommended product?

Thanks! Keep cool out there.