I was looking to see if Turbo Cotton was a specific Specialized brand. Specialized.com is down for maintenance........ I hope it's not like what happened to Garmin recently.
However my 2020 Tarmac came with 26mm TurboPros which are cotton threads. They did ride very well even though they were low TPI casings. I got three maybe four flats in the first 400 miles riding the same route. They were tread punctures from rock shards and some the small barb on the end of some of our big pine cones. So I put on the GP 5000's I had as spares and have not had any flats riding the same routes for the last 700 miles.