Two Specialized Roubaix Pro Clincher Tyres - Unused. 700x23/25 These tyres have a 23mm rolling profile for speed and a 25mm cross section for comfort. I would advise checking that your frame can handle a 25mm tyre, mine couldn\'t so therefore I have a spare pair of tyres. Ihave got a pair of these on another bike that I recently rode to Sapin on from the UK and I can testify that they are very effective and comfortable tyres Sold packaged as new