This beautiful set, scarf and hat, one size fit all,Kids to adult, design to be cozy, keep warms, a beginner project,only in knit and purl stitches. The pattern requires U.S. Size 11 (8mm) knitting needles, and 279 yards in light blue color and 90 yards in darker color, bulky yarn in weight 5.finished measurements:hat-17’’around/9’’long:scarf-11’’wide/96’’long.