SIMPSON HYBRID Sport features a light-weight design using DuPont carbon/polymer construction and provides maximum comfort and maneuverability with superior strength. Hybrids come race ready. The trusted low profile design disappears into the seat when worn and allows for easy in and out of the race car, eliminating the danger of becoming caught in other gear. The protection stays with the racer during multiple impact, flips and rolls. SFI 38.1 Certification. Supplied with D-Ring Quick Release fitting kit to suit any Neck Restraint ready helmet.