Yarden (pronounced yar-dén) is a lace and stockinette stitch shawl that gets its wavy lines from increases and decreases in the lace sections. It begins with a garter stitch tab and is worked from the top down making it an easy shawl to enlarge by working additional repeats of the lace and stockinette stitch stripes. The pattern includes instructions for both fingering and sport weight yarns, but you could work this in any weight yarn.
Actual yardage used is approximately 420  yards MC and 210  yards CC. If you use tosh merino light, it's a good idea to have a second skein or some additional yardage of the main color.
Pattern is charted.