Designed for the cobbles of Ronde Van Vlaanderen and Paris-Roubaix, ready for your hometown roads, the Turbo Cotton Hell of the North tires feature the same tread design as our S-Works Turbo Hell of the North Tubular version''adding to our collection of the world's fastest tires.The overall design supports you with more traction and comfort, and in the end, will give you more speed compared to other tires. The supple 320 TPI, cotton casing supplies you with a 15% improvement in damping and with the help of our GRIPTON'‚® compound, offers 20% less rolling resistance over previous tires used on rough roads. And for added protection, our BlackBelt puncture-protection protects against flats.