The NecksGen REV is the more affordable option for those looking for a great head and neck restraint / frontal head restraint but are more budget conscious. Combining the safety of an SFI 38.1 certified device, with the comfort of the small package of the REV, it’s just a matter of choosing which size works best for you. REV head and neck restraints come with a fixed-length tether that will fit most drivers. Once you get your restraint you will need to do a slack test to ensure it is the right fit for you. If it isn’t, simply contact us and we’ll get you the right length at no charge. All NecksGen HNR’s ship free! That’s right, free ground shipping on all head and neck restraints. Just select free shipping at checkout.