The Specialized Butcher Grid Gravity 2Bliss Ready T9 Folding Tyre is the perfect choice for trail and gravity riders. Ramped and siped center tread blocks provide strong traction and accurate steering while the shoulder knobs offer a continuous biting edge for railing through fast corners. The GRID GRAVITY casing compliments gravity riding with an all-new 2-ply construction for cornering stability and flat protection. Building on this solid base the high-dampening T9 GRIPTON® compound rebounds slowly to grip and stick to the ground for total traction and control.Specialized Butcher Grid Gravity 2Bliss Ready T9 Folding Tyre Highlights-Casing: 60 TPI, Dual-PlyBead: FoldableButyl wrapped bead = 2Bliss ReadyCompound: GRIPTON® T9650Bx2.3," psi 25-50, approximate weight 1050g650Bx2.6", psi 20-40, approximate weight 1200g29x2.3", psi 25-50, approximate weight 1300g29x2.6", psi 20-40 approximate weight 1350g