.top{margin-bottom:30px;}.top li{margin-left:5%;margin-right:5%;margin-top:10px;line-height:120%;list-style-position:outside;}Punctures suck, which is why we've incorporated our legendary Armadillo flat-resistant technology into the Fast Trak Armadillo tire. Not only that, but we also took the tread design of the Fast Trak a step further by manipulating each knob with Finite Element Analysis. Paired with extensive rider feedback and design experience, the result is an XC tire with less rolling resistance and more traction, all with Armadillo puncture protection from bead to bead.26 x 2.1", psi 25-50, approximate weight 790g29 x 2.1", psi 25-50, approximate weight 850gBead: WireCasing: 60 TPICompound: 60aFlat Protection: Armadillo