Purgatory Grid 2Bliss Ready T9 29X2.4Meet the totally new Purgatory Grid 2Bliss Ready T9. This do it all tread from Specialized features large center square lugs that bite in soft soil, while still providing support on hard packed ground and is equally at home on the front or back of the bike. The brand's T9 compound is a gummy, gravity compound with loads of stickiness, for the rider won't compromise on grip. Block in block knobs roll fast, adapt to terrain, and are supremely confident