12 Like helmets and seat belts, head-and-neck restraints don’t last forever. But instead of throwing it away and buying a new one, The Hybrid line can be inspect and rebuilt if necessary. Ashline says that it usually involves only replacing the polyester wrapped Kevlar straps and the rubber pads where the shoulder belts lay over the carbon-fiber restraint. The real cost of the unit is in the carbon-fiber portion of the restraint, but the good news is that it will fit practically anyone from age 14 on up. So it will last you for years and you can have the chest strap resized as you grow.