What Our Gearhead® Experts Are Saying: "I’ve used the Riddler on everything from cyclocross courses to gravel centuries. It rolls super quick but still holds the line when the surface gets loose. The SG protection layer adds peace of mind for unpredictable terrain without adding noticeable weight."From smooth tarmac stretches to rugged back roads, the WTB Riddler keeps us moving fast while giving us the traction we need when it counts. Designed for riders who blur the lines between CX speed and gravel exploration, it blends fast-rolling efficiency with confident grip through variable conditions. The semi-slick tread keeps the centerline quick and consistent, while taller shoulder knobs provide solid cornering on loose surfaces. The Dual DNA compound strikes a balance between a fast-wearing center and grippy edges, and the SG puncture protection layer offers bead-to-bead coverage so we can ride harder with fewer flats. It’s a tire that lets us focus on the ride, not what’s beneath us.