No specific yarn brand is suggested - the pattern only says to use fingering weight Shetland wool. The amounts listed per color are as follows:

• color A, 215g - black (黒)
• color B, 110g - gray (グレー)
• color C, 45g - beige (ベージュ)
• color D, 90g - natural (生成り)
• color E, 85g - white (白)

Yardage listed above is an estimate based on typical fingering-weight wool.

Calls for Japanese size 3 & 4 knitting needles (3.0 & 3.3mm). You will also need 8 buttons (1.5cm).