The Ranger`s open tread pattern combines all weather clearance with light, fast, and consistent handling thanks to it`s smooth profile and larger shoulder knobs. 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. DNA2 – Dual DNA is the perfect mix of efficiency, traction, and durability firm centerline with softer shoulders and sides.