Gain valuable additional seconds of heat and thermal protection with the use of Impact’s fire retardant underwear manufactured from our line of ImpactMAX Nomex® and available in a natural white or charcoal gray material. Our soft yet durable fire retardant underwear is form-fitting and hand-crafted with a flat interlock stitch to minimize pressure points while providing cooling comfort through the use of our exclusive moisture-wicking interlock knit Nomex® material. Impact’s fire retardant Nomex® underwear works perfectly under any driving suit and provides an additional layer of valuable protection. Manufacturer certified to comply with the SFI Foundation's 3.3 specification.