Why were the suit with special coating a better option for racecar drivers?

Explanation:

Race cars drivers must be very well protected from the fire hazards. the fire proof suits they wear while seated their cars have evolved immensely since their first appearance.

We have to have a special suit that is SFI rated in order to keep us protected in case of a fire and to also keep us protected from chemicals if a wreck was to occur. Even when stitching or embroidering our suits, we have to use a special thread that is fire resistent! Our suits can be single layer, 2 layer, or 3 layers, depending on how much protection you need

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