Description
Fire-resistant base layers aren’t optional in the cockpit—they’re essential protection during high-performance driving. The Simpson Carbon X Underwear Top delivers SFI 3.3 certification and superior thermal protection without the bulk, allowing full range of motion during intense racing sessions. Built from soft-knit CarbonX fabric, this long-sleeve top provides dependable flame resistance while remaining comfortable enough for extended wear under a race suit.
- SFI 3.3 certified
- CarbonX flame-resistant fabric
- Long sleeve crew neck
- Soft knit construction
- Black color
- Large size
- Single unit
- Bolt-on ready
