Corsa N. EXT is the exciting new addition to the Corsa family. Designed to satisfy the requirements of enthusiast cyclists who clock up the miles on long and demanding weekly rides, Corsa N. EXT combines Vittoria's peerless knowledge of racing performance with the durability of a long-lasting nylon casing that uses a unique Silica and Graphene compound for improved rolling efficiency, grip and longer wear-life. To increase puncture protection, the central section of the casing features 3 layers of nylon as well as an additional puncture protection belt. Corsa N. EXT is the first road racing tire to feature a QR Code - printed on the tire hot patch - for easy access to useful technical information about the tire. | Vittoria Corsa N.EXT Foldable Road Bike Tube