Puncture protection and mileage are the strengths of ­Hardshell-ProTection. A wider PolyX Breaker™, the specialist against punctures, under the tread centre and shoulders provides for great reliability. The three-ply – each layer with 60 TPI – ­carcass covers the entire tire and makes it a real ­bastion against urban detritus. The outer ­sidewalls of the tire are reinforced with ­DuraSkin® fabric providing even more reliablility due to the casing being so well protected. ­Hardshell tires are the puncture-resistant ­flagship amongst racing tires – produced ­exclusively in Germany.