Road style file tread reinforced with stepped shoulders and small yet effective corner knobs that keep you rolling even after the pavement ends Multilayered construction of the tubeless Supple Casing delivers a soothingly smooth ride quality without deteriorating under varied conditions Light - Lighter weight compound conforms to trail objects while still providing a happy balance between low rotational weight and reliability FR - Fast Rolling, with WTB`s Dual DNA rubber compound that optimizes efficiency, traction and durability, A firm, long-wearing centerline tread with softer side knobs TCS - WTB`s Tubeless Compatible System, sealant based tubeless system with improved bead shape SG2 - Defends all surfaces of a tire by providing an uninterrupted layer of puncture protection from bead to bead