Measurements: The 9-12 month size has a finished chest measurement of 18.5 inches, the 18 month size is 20.5 inches finished, and the 24 month size is 22.5 inches finished.

Suggested Yarn: The pattern calls for 7 ounces of the main color and 2 ounces of the second color for the 9-12 month size, 8 ounces of the main color and 3 ounces of the second color for the 18 month size, and 9 ounces of the main color and 4 ounces of the second color for the 24 months size. The yarn suggested in the pattern comes in 7 ounce skeins (approximately 575 yards), so you will need more than one of the main color if you make a larger size. The yardage works out to about 82 yards per ounce.

Additional Materials: According to the pattern, you will need split-ring stitch markers, a yarn needle, 3 snap sets, a sewing needle, and thread.