Very fast and lovely ride, but they’re a summer race tyre. 25mm came up as 27mm on 17c internal rims. Perhaps bad luck but I had a spate of punctures with mine as the tread wore, so got fed up and binned them. As a tyre they’re very similar to vittoria corsa sc.
They haven't arrived yet. I got the last ones in stock and thought if they're no good I'll return them
There are some reviews for other constructions but not the SC S. They are cotton though