The Re-Fuse rolls fast and has extreme durability and can handle long miles on everything from pavement to gravel. Features: Knurled tread pattern for low rolling resistance and all-condition grip Intended use: training, urban, hardpack Maxx Shield utilizes bead to bead Silkshield with an additional layer of K2 Kevlar Composite for unmatched durability Single rubber compound for longevity and performance Specifications: Color: Black/Black Defined Color: Black Intended Use: Road ISO Diameter: 622 / road / 29" ISO Width (mm): 23 mm Labeled Size: 700 x 23 Tire Bead: Folding Tire Diameter: 700c Tire Type: Clincher Weight: 255 TPI: 60 Flat Protection: Tread and Sidewall PSI: 120