The Specialized Electrak Armadillo Tyre is designed for use on high-power electric bikes but also works well on 29” wheel mountain bikes & hybrids that are being used for commuting. The slightly rough, round profile allows for fast riding & the ultimate in grip, along with smooth transitioning into corners. The Specialized Armadillo construction provides maximum puncture protection, while also supporting the entire casing to handle the rigors of city streets. The Electrak Armadillo is a great city & commuting tyre for a wide range of bikes & riding styles. Casing: 60 TPI Bead: Wire Compound: GRIPTON® Flat Protection: Armadillo 700 x 45mm / 29 x 1.7", psi 35-65, approximate weight 640g