The simple slip and twist stitches in this sock look great in solid or striped yarns.

Printed versions available at these outlets:

Abstract Fiber
Serendipitous Ewe
Abundant Yarn & Dyeworks
All About Yarn

Errata to early versions of printed pattern:
Heel flap: There is no page seven with a chart. Ooops!
Heel flap: Slip first stitch of every row.