Taken from Knit Simple - 2011 Holiday: "This iridescent piece, crocheted in a five-round lace pattern, gets its signature twist by joining the foundation round into a mobius loop and continuing in the round without turning the fabric."
This pattern is in Knit Simple - 2011 Holiday, page 79.
Size US I crochet hook (or size needed to obtain gauge) are required but not included.