Sharpness, as we understand it, is truly unique to Scottish thread. Naturally, a thread is always fuzzy because some fibers stick out from the thread. Mercerization burns off all these fibers sticking out to create a perfectly clean thread. Some find this sharpness a bit dry, but the advantage of mercerization is that it greatly delays the appearance of pilling and makes the thread shinier and more refined. The sheer socks with a clean feel include the super-strong range as well as all the sheer socks made from Scottish thread.