Heavy Worsted or Light Bulky Weight yarn in 2 highly contrasting colors. At least 30 yards of each color. Be sure one color is easily identifiable as your “dark” color and one as your “light” color. 16-inch circular needle one size smaller than what you would normally use with that yarn. You MUST use a circular needle – straight needles do not work with brioche. Yarn suggested is Cascade 128 Superwash. Needle suggested for this yarn is a 16-inch circular in size 9 or size 8 if you are a loose knitter. Scissors, pencil, paper for notes, and locking stitch markers.