Yarn Sirdar Jewelspun with Wool Chunky Shown in shades 205 Ocean Moon and 203 Mother of Pearl - 1 ball for both items. Gauge 13 stitches and 26 rows = 4 inches in Half Fisherman's Rib Needle size US 9 - 5.5 mm US 10½ - 6.5 mm Yardage 328 yards (300 m) Sizes available One Size - to fit an average adult. Hat Finished measurements: Height: 11.5" (29 cm) Circumference: 19.75 (50 cm). Note - hat has been designed to be close fitting and will stretch to fit. Mittens Finished measurements: Length: 9.75" (25 cm) Circumference: 7.5" (19 cm)