The Ground Control Control 2 Bliss Ready T5 uses an extremely versatile tread pattern which can be used from cross country race to trail it rolls fast with exceptional amounts of confidence & grip. Our Block-In-Block design uses a taller adaptable inner block to pierce the ground & claw for traction. The larger outer structure supports the inner block for additional speed traction support & stable handling. The Control casing is our light & durable do it all XC construction. To top off this build we use our fastest rolling race ready T5 compound with excellent wear & tear protection. Casing: 60 TPI light & durable do it all XC construction Bead: Foldable. Butyl wrapped bead = 2 Bliss Ready. Compound: GRIPTON T5. 29 x 2.2 PSI 25-50 approximate weight 800g. 29 x 2.35 PSI 25-50 approximate weight 845g.