From official page:

A special dye is used in this 100% cotton yarn to reproduce a denim-like color. This thick yarn can be used for a wide variety of widths, producing eye-catching fabrics.

Stick Needle JP 3-5
Crochet Needle JP 5/0-6/0
Gauge 22-23 sts 30-31 rows

Average usage

• Women’s pullover: 240g
• Men’s pullover: 280g