Sizes and Material Requirements:
32” (81cm): 8 x 50g balls, 5 buttons
34” (86cm): 9 x 50g balls, 6 buttons
36” (91cm): 9 x 50g balls, 6 buttons
38” (97cm): 10 x 50g balls, 6 buttons
40” (102cm): 11 x 50g balls, 6 buttons
42” (107cm): 11 x 50g balls, 7 buttons