.top{margin-bottom:30px;}.top li{margin-left:5%;margin-right:5%;margin-top:10px;line-height:120%;list-style-position:outside;}The Ground Control tire, with our new CONTROL casing, delivers plenty of versatility and flat protection. Not only does it feature improved cut-resistance, but we've also optimized the tread using Finite Element Analysis. It also features our own GRIPTON® compound that maximizes mechanical grip, damps vibration, and offers unparalleled traction in either wet or dry conditions.26 x 2.1", psi 25-50, approximate weight580g 26 x 2.3", psi 25-50, approximate weight 620g 27.5 x 2.3", psi 25-50, approximate weight 670g 29 x 2.1", psi 25-50, approximate weight 640g 29 x 2.3", psi 25-50, approximate weight 740g Bead: Foldable Butyl wrapped bead = 2Bliss Ready Casing: 60 TPI Compound: GRIPTON® Color BLACK