[QUOTE=fluter;989340]Kilted Rogue: go back to KnitPicks, and in the top menu under Yarns there is a link "Sock Yarns." Click there! Many of them are fingering weight (very light, more like "regular" socks).

The closest match for the pattern is Swish Worsted or DK. However this doesn't have the nylon component, it's all superwash wool. Good, because it's machine washable. Not so good, if you are hard on socks! You don't want to wear holes in these on the second wearing.

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There is a thread, "wooly nylon" by Threadart, which is sold for use in sergers. Many sock knitters, including me, knit this thread along with the yarn in the heels and toes as reinforcement. One spool of this goes a very long way. I have a photo of this reinforcement in my album here, the blue hose toes and heels.

This product is available online at Schoolhouse Press (also a good source for yarns) and in sewing stores like Joann's.