FiberLink™ technology makes this possible. Utilizing DuPont™ Kevlar® fibers, FiberLink™ seals are extremely robust once they plug a hole. When a puncture happens, fibers rush into the wound and quickly stop air loss. As the tire flexes while it is ridden, the FiberLink™ mesh tightens and reinforces itself, creating a confidence-inspiring seal that will last ride-after-ride.