I wonder, that since many medieval knights would wear padded gambesons and metal armor over it, were they vulnerable to overheating during hot summer days, especially when soldiers not used to the Mediterranean climate traveled far south during the crusades, and if so, what methods were used to avoid heatstroke when they had to wear full armor?
This isn't to discourage further answers at all, but while you're waiting, check out this previous thread:
How did heavily armored knights handle the heat and warm climate during the crusades? by /u/capstaincrunch and /u/hey_dale