You pore gasoline on these shoes and they did not burn?!!! But the gasoline burn up?

At over 700 degree Celsius? What are these shoes made of, titanium alloy?
FYI, just about all shoes burn. Most are made of leather or pleather, plastic, or cloth.
Here is an idea with all man made shoes. Works great if the shoe is made of pleather, plastic, polyurethane or velveteen. Try putting the shoe on a hot cooking sheet and let the shoe melt on the sheet. If done right, the shoes should start to melt. Some will melt completely, other will catch on fire and burn up.
