Here is a two-color cowl with a reversible mesh at the top and bottom of the piece. To knit it, you will need roughly 225 yards of your main color yarn, and 50-ish of your secondary color (for the larger size). You will also need 2 24” circular needles, one in size 4 and one in size 7. Alternatively, you can knit this in a smaller size, for which you will need 2 20” circular needles, also in a size 4 and a size 7.