Tufo s33 pro road tubular tyretraining tyre for all around use with higher inflation pressure fine tread pattern contributes to low rolling resistance and good riding quality featuresuse trainingsize 28weight 260g 21mm310g 24mmpressure 812 bar 115175 ps i 21mm68 bar 90115 ps i 24mmtpi 60 sidewall area 90 under the treadbuytufo wheels tyresfrom chain reaction cycles the worlds largest online bike store