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Challenge produces the only seamless 'one-piece' latex inner tubes on the market providing a smooth, balanced ride with no pucker or bump-like those found on other tubes. Latex tubes are lighter, thinner and more flexible than a butyl tube, increasing your comfort, lowering your rolling resistance, and helping to prevent flats. The tube also includes a removable core Presta valve making them compatible with both inline and external valve extenders.

• The only Seamless ‘one-piece’ latex inner tube on the market
• Seamless & smooth, no bumps at the valve,
• No “out of round, unbalanced” wheel
• Improves rolling resistance and comfort
• Strong and extremely elastic, thus very reliable
• Improves resistance to punctures
• Is lighter weight than standard butyl and some superlight butyl tubes
• Has a two-piece removable valve core for valve extender use
• Two sizes: for Road/wider Road 19-28mm and for wider Road/Adventure 29-38mm
• By far the cheapest way of improving the performance and overall feel of your bike!