Fire Retardant Underwear Bottoms

Boost your protection and peace of mind at the track with fire retardant underwear bottoms from Phantom Motorsports. Designed for racers and motorsport enthusiasts alike, these underlayers offer a critical extra barrier against heat and flame—helping you stay safe and comfortable during high-stress driving conditions. Worn under your racing suit, fire-retardant underwear bottoms not only increase your time to escape in an emergency, but they also wick away sweat for all-day comfort and performance.

At Phantom Motorsports, we only stock underwear bottoms made from advanced flame-resistant materials like Nomex and CarbonX, meeting or exceeding SFI and FIA safety standards. Our bottoms are lightweight, breathable, and engineered for a snug yet flexible fit—so you never sacrifice mobility behind the wheel. Make sure your motorsports safety gear is complete with this essential, race-proven base layer.

FAQ

What are fire retardant underwear bottoms used for?
They provide an additional layer of flame and heat protection under your racing suit, increasing your burn resistance and helping to meet most motorsports sanctioning body requirements.

Are your underwear bottoms SFI or FIA approved?
Yes, many of our underwear bottoms are SFI- or FIA-certified. Product listings specify which approvals apply—always check your race rulebook for required ratings.

What materials are these bottoms made from?
Most are made from advanced materials like Nomex, CarbonX, or other aramid blends, offering superior flame resistance while remaining soft and breathable.

Can I wear fire retardant underwear with any race suit?
Absolutely! They can be worn with any fire-resistant race suit (single- or multi-layer) for added safety, comfort, and sweat-wicking performance.

Are there sizes for men, women, and youth?
Yes! We offer a full range of sizes and cuts to ensure a proper fit for all body types and ages.

How do I care for fire retardant underwear bottoms?
Wash with mild detergent and cold water, and air dry to preserve the flame-retardant properties. Always follow the manufacturer’s care instructions.

What if my underwear bottoms don’t fit or arrive defective?
Customer satisfaction is our priority. Contact us within 7 days if they don’t fit or arrive damaged, and we’ll arrange a prompt replacement or refund.