Simpson CarbonX Underwear Bottom - Black BR2002 2A/1 rating

2A/1 rating

Box Quilted

Three Layers of Lightweight Aramid and FRC Blended Fabric is Hypoallergenic - Won't Irritate Skin

All with white stripes across the chest and down the arms & legs

The 360-degree

Simpson CarbonX Underwear Bottom - Black BR2002 2A/1 ratingCarbonX and and Ultimate underwear is made from double jersey interlock knit comprised of a patented blend of high performance fibers and has extraordinary thermal protective properties. It is inherently flame resistant, will not burn, melt, or ignite when subjected to direct flame. Nomexandand or CarbonXand andUnderwear underneath a racing suit will dramatically improve Thermal Protection Performance (TPP) in the case of an accident involving fire.