I have come to the conclusion that if I do start flying avgas machines again in any amount of hours I will be getting some fire retardant clothes for the purpose. The old Instructors uniform of a pair of primark chinos and cheap white shirt really does absouletly nothing for you and in the case of the cheap white shirt will proberly make matters worse when it melts into your skin. Something which I have experence with when I brushed up against a pitot tube while doing a first flight while it was on, resulting in a 2" by 3" second degree burn on my shoulder which all the skin got ripped off removing my shirt.
Funny that that attitude really doesn't prevail in GA despite the rare but nonetheless obvious fire risk in light aircraft, in fact I've read comments on here ridiculing the wearing of flight suits for example in non-aerobatic aircraft.
What sort of fire retardant clothes would you get? Something made from leather or Nomex?