Done research on these tyres i got a lot of information about the tyres on YouTube i bought 2pairs to replace a set of continental 5000 tyres the older ones seem not so puncture resistance when it rains a lot of stop and go with them so to the new set all the rain we have had and no punctures i got 23/700 size pressure 110 front/back i do about 150 per week miles in total i would recommend these tyres and okay to fit fiddly but you get them on in use for 2 monthsPuncture protection, less chance of flats but eventually protection will wear thin after a few years , or so many thousands of miles subsequently.On the advice of a friend I bought these as I was getting constant punctures on the commute to and from work. When of the best purchases I have made - they have saved much more money in the long run. Absolutely invincible - I inspected them the other day and all many of nasty sharp stuff had become embedded, but the tyres still carried on!Local suppliers have stopped stocking these. I love these tyres. It takes a lot to puncture these, so I was glad to find them available at a very competitive price.Got fed up with a repeat puncture problem while riding over small stones/gravel at the side of the road. After some investigation I opted for Durano Plus. Very impressed. Not only have they stopped punctures but they seem to have a lower rolling resistance- bonus. They are a bit more expensive but well worth it.