One of the best things about this design is that it's easy to imagine it having been worn for more than a thousand years. Picture it in a Viking movie, or in the times of King Arthur or Robin Hood-- not out of place then, nor now. We should alert the Society for Creative Anachronism.
The 17-row slip stitch pattern down the front is a pretty detail, and it's echoed at the sides in a 9 row version. Gauge given is over garter stitch. There's a 305M for men, too, without the embellishment. Knit from side to side.