Simpson's Hybrid S model is currently the only Frontal Head Restraint proven effective for 3-point harnesses, and it is also FIA and SFI approved. Additionally, in a partnership with Detroit auto manufacturers, the Hybrid S is third party tested to FMVSS208. The Hybrid S allows high-performance driving instructors, auto manufacturing test engineers, and other drivers with 3-point harnesses access to the advantages of head restraint safety. The FIA Hybrid Head Restraint, in conjunction with a Snell or FIA rated helmet and a 3-point harness, reduced neck tension significantly when compared to a test with only a helmet and 3-point harness. While we can offer head restraint protection for use with 3-point seatbelts, Simpson's top concern is driver and instructor safety. We suggest a Full Containment Cockpit System that includes a Full Containment Seat, Snell or FIA rated Helmet, FIA or SFI approved Frontal Head Restraint, and a 5 to 7-point seatbelt harness system for the best protection while on the track.