Raised square-edged center knobs provide climbing and braking traction on dust covered trails, and oversized cornering knobs keep you planted in the turns Dual compound rubber formula with EXO sidewall protection and a Tubeless Race casing DC - Dual Compound tread provides a lower rolling resistance center paired with extra grip for the corners EXO equipped models feature Maxxis` EXO sidewall protection which help prevent puncture from sidewall abrasions TR - Tubeless Ready - sealant required Tubeless 700x40 622 TBLS - Fold Bk/Blk 75 425 120UPC/EAN/GTIN: 4717784038056