Cooling devices

[BevQ]

Hi, just wondering if anyone has tried a cooling 'glove' by core control to lower core body temperature. It is used by sportsmen and looks good but is costly:!:

[Anonymoose]

I am only heat sensitive in extreme outdoor sun and heat so I haven't tried any cooling devices. However, I'm wondering if drinking icy fluids works. I can make myself really cold in warm weather by drinking icy drinks. Does that work for people with greater heat sensitivity? It would be cheaper and more pleasant than wearing a vest...if it works.

Sorry for the off topic-ness.