From website:

The double knit technique is worked in color pattern on a circular needle. Both the front and inside layers are knit at the same time, resulting in a reversible headband. The pattern starts with a provisional cast on and finishes with kitchener stitch.

All six color designs will work with both sizes.

SIZES: Child (Adult)

YARN:Sport weight, 50 gms of two contrasting colors

NEEDLES: 16” circular sz 5, 16” circular sz 4 (US)