Courier Berlin:Berlin has some of the toughest streets on the planet.Berlin bicycle couriers asked us to provide more puncture protection to their favourite tyre, so we did! The Berlin spec. High-densityanti-puncture version of Courier tyre has a 2.5mm thick Anti-puncture strip instead of the normal 1mm puncture protection system strip.Available only in Black.700 x 24C - Weight: 415g700 x 29C - Weight: 475gProduct Video: https://youtu.be/o6X5PPct0Qc