evo.com | Specialized Tires > The Specialized Purgatory Grid Trail 2Bliss Ready T7 Tire is designed to excel across a variety of terrains with its versatile tread pattern. Block-in-block knobs ensure fast rolling and confident performance even under demanding conditions and the GRID Trail casing provides enhanced stability and durability with bead-to-bead protection. The T7 compound has superior rolling speed and longevity to level up your ride no matter the terrain. Block-In-Block Design A taller adaptable inner block pierces the ground and claw for traction, while the larger outer structure supports the inner block for additional speed, traction, support and stable handling. Grid Trail Casing Increases pinch flat protection by 15% and puncture protection by 30%. T7 Compound for Balanced Speed and Rolling Efficiency High Volume Center Blocks for Climbing and Braking Traction GRIPTON(R) T7 Compound | Specialized Purgatory Grid Trail 2Bliss Ready T7 Tire 29 2025 - 29x2.4 in Black