Race and training tire with grooved side tread for traction Dual layer puncture protection offers superior durability HRC - Hard Rubber Compound, designed as a complement to endurance training tires, it is a quick rolling, long wearing compound that still provides a comfortable ride feel E2 - Featuring the Iron Cloak bead to bead protection and 120tpi casing topped off with the K-Shield flat protection under the tread Standard 700x28 622 Fold Belted Bk/Bsk 110 60 HRC/E2/REF YesUPC/EAN/GTIN: 047853634143