From the description: Here’s a toe-to-cuff sock with some pizzazz. Mosaic patterns, developed in spectacular fashion by Barbara Walker, are a godsend to sock knitters who love Fair Isle or intarsia, but dislike the 2-colour methods employed to get that coloured, patterned look. With mosaic, you work with only one colour across a row at a time, slipping the stitches that are not worked in that row. Once you’ve done a pair, you’ll be reaching for your stitch dictionaries and annoying your librarian to get a copy of Mosaic Knitting on the shelves tout de suite.