I bought these tires for my commuter bike and have had no punctures at all. I ride 12 miles to work through industrial areas and am constantly facing broken glass, rocks, potholes, train tracks and the infamous Goat Head Thorn... With my old tires, I was patching them about once a month. I have been riding on these tires now for about 3 1/2 months and have not had a single puncture. In fact, I haven't even had to air them up at all. The tires are very lightweight and fast, as well. I would definitely recommend these to anyone who rides rough terrain and is concerned about getting flats.