Here is the list of safety equipment you will need

(from Section 9.3.19 of the General Competition Regulations)

The following equipment shall be in good condition and free of defects, holes, cracks, frays, etc.

1. Driving suits that effectively cover the body from the neck to the ankles and wrists. One piece suits are highly recommended. All suits shall bear an SFI 3-2A/1 or higher certification label or FIA 1986 standard or 8856-2000 homologation label. Underwear of fire resistant materials shall be used except with suits carrying FIA 1986 standard or FIA 1986 standard or 8856-2000 label or SFI 3-2A/5 or higher (e.g., /10, /15, /20) Certification Patch.
2. Crash helmets approved by the Snell Foundation with Snell sticker 2005 or later.
3. Gloves made of leather and/or accepted fire resistant material containing no holes.
4. Socks made of accepted fire resistant material.
5. Face coverings (balaclavas) of accepted fire resistant material for drivers with beards or mustaches. Hair protruding from beneath a driver’s helmet shall be completely covered by fire resistant material. As an alternative to balaclavas, a full helmet skirt of accepted fire resistant material may be used. Double-layer balaclavas are recommended. If balaclavas are used voluntarily, they shall be of accepted fire resistant material.
6. Goggles or face shields, preferably made of new impact resistant materials, for drivers of open cars.
7. A driver’s head and neck restraint system meeting SCCA standards (See Section GCR 9.3.18) shall be used at all times while on the track.
8. Shoes, with uppers of leather and/or nonflammable material that at a minimum cover the instep. Ventilation pinholes by the manufacturer are allowed.