* Short-knob center tread cuts down on rolling resistance while still providing enough bite for out-of-the-saddle traction.* Center and intermediate knobs on the Raddler are slightly taller than those of the original Riddler, thereby increasing tire lifespan without negatively affecting rolling efficiency.* Tall, toothy outer lugs ensure your favorite gravel descent doesn't unravel in the final corner.* Single-ply 60tpi casing provides dependable protection at a minimal weight.