This is what is posted on the website for clothing. How many are going this route?
4. CLOTHING : Non-synthetic fabric clothing (cotton, wool, leather etc.), covering torso, all arms and all legs, plus "tennis" shoes without holes are the minimum standard. SFI approved driving gloves are REQUIRED. They can be purchased through Summitt Racing and Jegs. Golf gloves are not considered appropriate. NO open toed shoes, shorts, tank
a. REQUIRED FOR VEHICLES THAT WILL RUN AT 190 OR ABOVE and HIGHLY RECOMMENDED FOR ALL OTHER DRIVERS: An SFI 3.2A/1 (or better) Driver's suit and SFI 3.3 Driver's Accessories (shoes, balaclava, gloves, underwear) are highly recommended.