The Vittoria Open Corsa CX III 700 x 23C is the fastest all-round racing tyre.  This tyre is the clincher version of the tubular Corsa CX.  It has Corespun 320 TPI cotton casing and PRB 2.0 flat protection.  It is made with ISOgrip rubber compound with the highest quality ingredients. It has a subtle tread pattern for grip, yet it rolls really fast.