SFI auto racing
Fire-resistant racing socks
Nomex® knit racing socks that close the gap between suit, underwear and shoes.
What SFI 3.3 asks of socks
Socks must reach a minimum TPP of 6.0 cal/cm² and should overlap the underwear or suit. Each sock carries its own patch above the ankle.
Material: Nomex® Knit Underlayer
| Composition | Meta-aramid (Nomex®) knit |
|---|---|
| Construction | Soft knit for a close, next-to-skin fit |
| Fire resistance | Inherent — meta-aramid fibre |
From Cuircon's materials library. A material figure is not a garment certification. Ask for the test report behind any figure.
SFI 3.3 at a glance
| Issued by | SFI Foundation, Inc. |
|---|---|
| Current edition | Effective 1 April 2022 |
| Covers | Gloves, underclothing, hoods, socks, shoes and boots, and other driver accessories |
| Graded by | Gloves: TPP of the top of the glove (grades /1 to /30). Other items: pass/fail minimum TPP. |
| Who certifies | The manufacturer, under a licence agreement with SFI |
From the official specification. Read the full SFI 3.3 guide.
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