You will need 3 buttons - approximately 5/8" (15 cm) each. Finished measurements: Chest circumference: 20.75( 21.25, 21.75, 23, 23.5, 24.25, 25.5)" 52.5( 54, 55.5, 58.5, 60, 61.5, 64.5) cm Finished length: 9.5( 10.25, 11, 11.75, 12.5, 13.5, 14.25)" 24( 26, 28, 30, 32, 34, 36) cm Sleeve seam:5( 5.75, 6.5, 7.25, 8, 9, 10)" 12.5( 14.5m 16.5m 18.5m 20.5m 23m 25.5) cm Yarn used: Rowan Baby Cashsoft Merino A. 121 Nutkin - 1 ball for all sizes B. 126 Puddle - 2(2, 2, 3, 3, 3, 3) balls C. 108 Sea Green - 1 ball for all sizes D. 124 Duckling - 1 ball for all sizes Gauge 27 stitches and 40 rows = 4 inches in Pattern Stitch Needle size US 2½ - 3.0 mm US 3 - 3.25 mm Yardage 710 - 852 yards (649 - 779 m) Sizes available 0-3 (3-6, 6-9 ,9-12, 12-18 months, 2 yrs, 3 yrs)