Medium depth siped center knobs and aggressive corner tread make this tire a perfect choice for any condition Dual compound, Double Down 2 ply casing is extremely resilient Tubeless ready compound works with tubes or tubeless sealant DC - Dual Compound tread provides a lower rolling resistance center paired with extra grip for the corners DD - Double Down construction features two full 120 TPI casing layers reinforced with a butyl insert TR - Tubeless Ready - sealant required Tubeless 29x2.3 622 TBLS - Fold Bk/Blk 50 1115 2x120 DC/DD/TR NoUPC/EAN/GTIN: 4717784031439