pattern is Vorticity from Socktopus (Alice Yu) My copy of the book has some misplaced repeat indicators. Alice answered my questions very promptly, however. I needed 2 skeins of the yarn to complete my very long socks, not realizing cotton was that much heavier than wool. I now have enough cotton for another pair with contrasting heels and toes. I used my Cubic DPN's which I LOVE!