Key Features:This super fast looking city slicker turns any bike into a racer, helping bike messengers meet those tight deadlines or fitness riders who require a faster tyrePuncture protection and reliability is taken care of thanks to Continental's renowned hard wearing tread compound and two SafetySystem anti puncture layers beneath the treadAn improved 180 tpi (threads per inch) nylon casing increases speed and comfort. This is because the finer casing material deforms more quickly around imperfections in the road surface compared to a lower tpi casing. This feature also improves puncture resistanceThe Contact Speed also features a 'skinwall' sidewall. Most city/trekking tyres use a 'gumwall' meaning lots of rubber in the sidewall to improve sidewall puncture resistance. A skinwall sidewall is much faster than a gumwall but just a little forward thinking is needed to avoid scuffing kerbs and to always maintain the minimum recommended tyre pressure'Micro-diamond' tread pattern rolls