The Nine Line is the new-school approach to a top notch, 29-inch specific, lightweight race tireMicro-square knob tread design and supple casing provide impressive traction to keep you in controlLight: Lighter weight compound conforms to trail objects while still providing a happy balance between low rotational weight and reliabilityFR: Fast Rolling, with WTB`s Dual DNA rubber compound that optimizes efficiency, traction and durability, A firm, long-wearing centerline tread with softer side knobsDNA2 - Dual DNA is the perfect mix of efficiency, traction, and durability firm centerline with softer shoulders and sidesTubeless29x2.25622TBLS - FoldBk/Blk75560LIGHT/FR/DNA2NoUPC/EAN/GTIN: 714401108622