The Challenge Dune is a super fast rolling CX tyre designed to provide maximum speed and control on sandy and frozen CX courses. It won't be out of place if you decide to go gravelling on your CX bike either!File tread pattern with exaggerated side tread for excellent speed and grip300TPI SuperPoly casing gives an incredibly smooth and supple rideHandmade folding bead casing with PPS puncture protectionSmart rubber compound for excellent grip and durabilityNot tubeless compatibleThe Dune's file centre tread rolls incredibly well on sand as well as hard-packed surfaces, while still offering excellent traction under power and when braking. Supplementing this are larger side knobs that dig in while cornering, offering a super surefooted feel on even the loosest of corners.On tough CX courses, you need confidence that your tyres are tough enough for the job and the Dune won't let you down thanks to it's PPS puncture protection, while the handmade SuperPoly casing gives it that elegantly su