It's been hot lately where I live, and I had the misfortune of needing to wear a 100% polyester shirt for some of the time.
It was awful, but it made me start thinking of super hero costumes. Daredevil's is essentially leather. Batman's is thick and armored.
How do these costumed heroes stay cool during their physical activity? They're so active, that I'd think heat exhaustion would be a serious risk.
Okay, so I don't want to know about every single hero and their costume. This is my real question:
Have any comics addressed overheating as a concern of the character's costume? If so, which comic/character was it, and did they mention how it was addressed? (I understand this could potentially be a list question, but I would presume the number of answers is not only finite but small.)
Something like special fabrics, personal air conditioners, anything. I would narrow the scope to only include solutions that involve special properties of the costume and not the hero. IE Superman's immunity to temperature isn't an explanation, but Iron Man having an AC unit in his armor would be.
This may seem like a trivial question, but I've found that in some types of sci-fi works, small details like suits dealing with temperature regulation or homeostasis are quite common.