Not only must co-driver underwear be fireproof, it also has to enhance co-driver performance by reducing heat, freeing up movement and fitting perfectly. Alpinestars, which makes up around half of our underwear range, is known as the go-to option for racing underwear, meeting FIA 8856-2000 standards with a comfortable, athletic-like fit. Walero, though, is another option with NASA designed temperature-regulation properties. The FIA approved Walero base layers have been scientifically developed to regulate skin and body temperature, enhancing driver performance and comfort with the newest technology. Our socks, too, come with a heat-reducing Nomex® construction and knee-length height for an improved, secure fit. Whether it’s Alpinestars, P1 or Walero, our whole range of co-driver underwear will keep you cool, calm and focused.