The Vittoria Rubino features a nylon 60 TPI casing and a Kevlar Endura 3D compound for a good performance with high duration and an exciting road behavior. *Kevlar Endura 3-D compound tread for high mileage *PRB puncture protection *60 tpi nylon casing. Item Specifications; PSI:100-125PSI; Tire Bead:Steel; ISO Diameter:622 / road / 29'; ISO Width:23mm; Labeled Size:23; Color Tread/Side:Black/White; Tire Type:Clincher; Tire Diameter:700c; Tire Use:Road; Defined Color:Black;