Yarn:
315 yards of dk weight yarn
We used 2 balls of Berroco Summer Silk in #4006.

Needles:
US 6 / 4 mm 24” circulars
or equivalent type & length in size needed to obtain gauge

Sizes:
one size, but adjustable with different gauge and size

This cowl is knitting in the round and add height as much as you desired.