Check the listing for details. Schroth Racing SHR Flex Head and Neck Restraint Medium. Condition: New. Listed at 399.00 USD. Schroth SHR Flex Head and Neck Restraints have been designed to give you the very best safety, comfort, and easy operation for your money. Schroth's SHR Flex is a dynamic frontal head and neck protection system with many technological advances. These SFI 38.1 certified restraints provide excellent fit and reduce interference with the seat. SHR Flex design highlights include dynamic articulation of the collar, rate-responsive peak neck tension loads, a stabilizing dual tether system and flexible, form-fitting lower legs.Made of High Strength Carbon Reinforced MaterialsIndependent Angled Lower Collar DesignArticulating CollarRate Responsive Bump StopSliding Twist Anchor Tether SystemSlipStop Belt Retention SystemForm Fitting Lower LegsSFI 38.1 CertifiedMedium (up to 16 in. neck)