Challenge, Seamless Latex Inner Tube, Tube, Presta, Valve Length:48mm in addition to the aerodynamic

in addition to the aerodynamic shape

Offering 7 combined solid and flash output modes

no more creaking

No compromises – a true allroad profile that closes the gap between road bike and gravel

Monoblock design

Challenge, Seamless Latex Inner Tube, Tube, Presta, Valve Length:48mm in addition to the aerodynamicChallenge 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 Includes a removable core Presta valve making them compatible with both inline and external valve extenders