Alpinestars Race V3 fire-resistant underwear bottoms, these advanced tech base layers from Alpinestars, feature their innovative flame-resistant Lenzing FR fibres, offering high levels of breathability and enhanced flame and heat resistance properties. Two layers with flat seams and a relaxed fit, improve comfort and help reduce fatigue.
Approval:
Key Features:
- Seamless Design
- Highly Breathable & Ergonomic
- Unrivaled Protection
- Lightweight soft-touch material
- Enhanced heat and flame resistance
- Improved heat and flame resistance
- Seamless tubular construction eliminates pressure points
- Stretchable fabric for a closer fit
Do I actually need FIA underwear?
If your championship requires it, this is the layer scrutineers ask about, and it is strongly recommended under any suit regardless. These bottoms are homologated to FIA 8856-2018, the current FIA standard, so the label is there when scrutineers ask for it. Our guide on whether fireproof underwear is mandatory covers the rules championship by championship.
What size should I go for?
Sizes run from S to XXL. Underwear layers should sit close to the skin without pinching, as loose fabric wrinkles under the suit and gets uncomfortable fast. Between sizes, take the smaller one for a base layer.
How do I wash it?
Underwear layers are the one bit of racewear you should wash after every use: cool and gentle, no bleach or fabric softener, air dry. That keeps the suit itself needing far fewer washes. Full routine in our racewear care guide.
