Smallest and least restrictive head and neck restraint for sprint cars and midgets. Features a tension neu- tralizing tether that provides exceptional front and lateral support. Has an increased range of motion which eases entry or exit of car.SFI 38.1, Includes quick release hardware. Full range of head motion offers little to no interference with seat or helmet. Lightweight carbon composite material, weighs just over 1 lb. Can be used with almost any car and any seat. Sizes large, medium, and youth.