Simpson CarbonX Ultimate Bottom
CarbonX delivers base layer products with extraordinary thermal protective properties. Ultimate Underwear is made from double jersey interlock knit comprised of a patented blend of high-performance fibers. It is inherently flame resistant, will not burn, melt, or ignite when subjected to direct flame.
- SFI 3.3 Certification
- Designed to deliver the ultimate in base layer thermal protection
- TPP rating of 13 cal/cm2 and zero seconds after flame
- Lightweight, patented blend of high-performance fibers
- Double jersey interlock knit
- Long or short sleeve crew neck top