MiraCool bandanas from Occunomix provide a great way for workers to reduce heat stress in outdoor and other high-heat environments. The 940-FR also provides FR protection for workers operating in enfironments where there is a danger of injury from light flame or sparks. Just soak the MiraCool bandana in cold water for 10 minutes, and the cooling crystals activate, staying hydrated for several days. The 100% cotton fabric provides comfort around the neck, while the super-absorbent cooling crystals retain moisture to keep the wearer cool all day long.