Smooth center tread with textured shoulders. R2C - Kenda`s road-specific dual compound blends traction and speed. REF - Reflective sidewall striping or hotpatch to aid in low light visibility. KA - K-Armor is a proprietary casing material technology developed by Kenda for superior puncture protection and rolling resistance. The super light-weight material features a tighter weave than traditional puncture breakers while being lighter overall