Were not afraid to say that our GRIPTON compound is the best out there. And when combined with an ultra-supple 320 TPI cotton casing, you get a tire thats very specialyou get the Turbo Cotton tire. Both materials stand for master craftsmanship, and they work in harmony to reflect our dedication to building the worlds fastest tires. By bringing both of these materials together, weve created the best clincher tire out there. It provides a clear-cut performance advantage.