Finish Line Metered Pump (1oz) for 1 Gallon Jug NEWCreates a Kevlar reinforced Fibrelink sealWhen a puncture happens fibers rush into the wound and instantly stop air lossAs the tire flexes while it is ridden the FiberLink��� mesh tightens and reinforces itself creating a confidence-inspiring seal that will last ride after rideUtilizing Dupont Kevlar-� fibers FiberLink seals are extremely robust once they plug a holeLatex free will not dry out inside the tire once installedWill last the entire usable life of the tireNo refreshing required; no gradual weight gainCO2 compatible and unaffected by cold temperaturesNaturally non-toxic and hypoallergenicWater soluble and cleans up easily with a wet rag