Introducing Simpson Head and Neck Restraints. With the 2012 SFI 38.1 mandates in effect, the Simpson Hybrid Head and Neck Restraints are the only choice for racing protection. Designed for easily exiting the car without the danger of getting hung up on other gear, our Head and Neck Restraints also offer the lowest profile and highest level of multiple angle impact protection of any competing device. Plus, they provide you with maximum comfort and maneuverability. Expertly engineered by Trevor Ashline with Safety Solutions technology, Simpson Head and Neck Restraints give you every advantage on the track. Is your helmet drilled for a HANS? No problem, the Simpson hardware will easily replace your current anchors in the same space and location.