Updated version of Michelin's wet conditions Road racing tire. 60% more grip than standard Pro3 Race tire on wet roads. ESC: Extra Supple Casing 127 tpi cross-ply carcass. HDPP: High Density Puncture Protector under the center tread. HPRS: High Protect Rim System protects tire from rim bead friction. SE: Silica Energy rubber compound for optimized grip vs. rolling speed.