Size "56" equates to typical size 58

64 color screen with an ambient light sensor to make it easy to see the metrics that matter most

Our latest warmers feature an softer Thermal fleece fabric with improved stretch

Low-lead nickel-plated valve with a threaded valve and removable core

It’s a perfect ‘all over’

Challenge, Seamless Latex Inner Tube, Tube, Presta, Size:24-32C Size "56" equates to typicalChallenge 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