The REV2 Carbon is new for 2020, and is currently the lightest head and neck restraint available. The Medium 2" tips the scales at less than 1 pound! The simple, small, easy to use design carries over from the popular REV2 Lite, and has the same level of certification and safety as all NecksGen head and neck restraints. The adjustable tether makes setting your slack and range of motion quick and simple. No need to worry about your seat angles or fiddly straps around your chest. Just put your belts on and go. Available in sizes to fit most all drivers. Quick release helmet hardware is always included with all NecksGen head and neck restraints. *Product must be returned to NecksGen directly for recertification. Free recertifications on the REV2 Lite will be honored for SFI 38.1, required on devices every 5 years. User/owner is responsible for costs above and beyond a standard recertification procedure, including any parts (ie. tether, shoulder pads, friction pads, hardware, etc.), cleaning fees, and shipping costs. No cost recertifications will only be honored on devices that are 4 years older than the manufacturing or recertification date on the SFI label on the device. If the SFI label is missing, a valid proof of purchase will be required. *Product must be returned to NecksGen directly for recertification. Free recertifications on the REV2 Lite will be honored for SFI 38.1, required on devices every 5 years. User/owner is responsible for costs above and beyond a standard recertification procedure, including any parts (ie. tether, shoulder pads, friction pads, hardware, etc.), cleaning fees, and shipping costs. No cost recertifications will only be honored on devices that are 4 years older than the manufacturing or recertification date on the SFI label on the device. If the SFI label is missing, a valid proof of purchase will be required.