Wild!  The only way to describe these 1960's op-art zig-zags that cover the socks.  These were done in magenta and navy, but any 2 color combinations would work well.  Optional "toe" is included for all who wear thong-type sandals.  A traditional toe is also included in the pattern.  You will need approximately 150 yards each of 2 colors worsted weight yarn with US size 6 straight and double pointed needles as well as a small stitch holder.