Just to answer the question below… I ride Maxxis clinchers the bulk of the time. However, in my product testing, I rode a single set of Continental Sprinters pretty much all summer. Racing, training, commuting… No flats. Also, the Utah All-Stars team had no flats at TofU on these tires. They ride really well too. I had considerably worse luck with the purportedly more flat resistant Gatorskins when it seemed I flatted on almost every ride.