Maybe It's A Mobius by Candace Eisner Strick

Maybe It's A Mobius

September 2016
Light Fingering ?
24 stitches and 48 rows = 4 inches
in garter stitch
US 3 - 3.25 mm
US 5 - 3.75 mm
519 - 547 yards (475 - 500 m)
length can be altered, size is variable depending on how aggressively it is blocked.
This pattern is available for $8.00 USD buy it now

What happens when you start a shawl with a mobius? It will never fall off your shoulders, it looks spectacular, and you can wear it multiple ways.

Pattern includes complete tutorial of the mobius cast-on, with both pictures and video links.