With soft rubber compounds that stick to wet roots & rocks & well-spaced knobs that allow the tyre to clean well this mud-munching tyre is made for riders who wont shy away from an environmental challenge--delivering traction in sections that most riders wont consider hiking over! Casing: 420/D1 for 15% enhanced cut resistance Bead: Foldable Butyl wrapped bead = 2 Bliss Ready Compound: 60a 29 x 2.0; psi 35-65