From official page:

This thread is made from loops of baby alpaca, similar to straight yarn made of 100% baby alpaca. It employs undyed, natural alpaca colors. Its greatest attribute is its gentle texture even when it comes into contact with the neck area.

Stick Needle JP 9〜11
Crochet Needle 9/0〜10/0
Gauge 15-16 sts 22-23 rows

Average usage

• Women’s pullover: 520g
• Men’s pullover: 640g