Sizes & Yarn
Underarm
A - 22-23in/56-58cm, garment to measure 24.5in/62cm - 10 balls
B - 24-25in/61-63.5cm, garment to measure 26.5in/67cm - 12 balls
C - 26-27in/66-68.5cm, garment to measure 28.5in/72cm - 14 balls

Additional material - fine spare needle, 1.5 yards x 0.5in elastic (1.4 metres x 1cm), and 12 (14, 16)in/30.5 (35.5, 49.5)cm