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At only 65g each (approx 50% lighter than a regular tube), Panaracers R-Air ultralight innertubes weigh less than many latex tubes. They are produced with a special Butyl compound, so unlike latex or other manufacturers lightweight tubes R-Air tubes do not loose air and do not sacrifice puncture resistance. Available in 2 valve lengths for suitability with various top end wheel sets for the weight conscious roadie.
Size: 700c x18-23c