RaceQuip: SFI 3.3 Long Underwear

SFI 3.3-rated long underwear from RaceQuip is knit from a proprietary blend of aramid and FRC fabrics to achieve comfortable, lightweight, fire-retardant performance (socks are 100% Nomex). This unique combination performs similarly to Nomex at a more economical price point, with the FRC portion providing a soft and supple feel.

But this material has even more to offer. RaceQuip designed it to be hypoallergenic, so it won’t irritate your skin like other materials, and it wicks away moisture to keep you dry when the race heat is on. These garments are machine washable, maintain their shape over time, and with their black color won’t show racing stripes or dirt.

Available Underwear

  • Top (42199X): XSM–5XL
  • Bottoms (42299X): XSM–5X
  • Socks (41199X): S (6–7) to 2XL (14–15)
  • Hood (433991): one layer
  • Hood (433992): two layers


  • SFI 3.3 rated (with sewn-in labels)
  • Proprietary blend of aramid and fire-retardant cotton fabric
  • Performs like Nomex but much more cost effective
  • Soft and supple feel
  • Moisture wicking
  • Hypoallergenic
  • Maintains shape
  • Won’t show racing stripes or dirt
  • Tops have long sleeves, cuffed wrists, and mock turtle collar.
  • Bottoms are in a long johns style.
  • Socks are 100% Nomex.
  • One- and two-layer hoods with single eyeport and comfortable flat seams
RaceQuip SFI 3.3 Underwear

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Though this is not a paid review, this content has been produced by The AAM Group in support of manufacturers with whom it has a business relationship.

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