Product Description The radder version of WTB&';s famed Riddler tread pattern, the Raddler combines the supple traction of a high-volume gravel tire with the rolling efficiency of a short-knob tread design. The minimalistic centerline allows you to maximize the output of every pedal stroke, while toothy outer knobs provide cornering confidence that refuses to let up. The time-tested Raddler is an excellent choice for unpredictable roads or trails where traction is key, but efficiency is of utmost importance.