Fire-Retardant Driving Suits, Non-Nomex
These driver's suits are constructed of fire-resistant treated cotton. They are considerably less expensive than Nomex® driver's suits, but they do have a finite life span. Repeated laundering (usually about 24 cycles) will eventually wash the fire-resistant treatment out. They are great for pit crews, as a spare suit, or for extra protection when a flame-retardant suit is not required.
Note: Most sanctioning bodies require fire-retardant underwear with single-layer suits. Please check your rule book.