From official page:

This breathable and fluffy lily yarn is made from 100% baby alpaca straight yarn. It’s recommended that this yarn be used to make items with a long length due to its pleasant softness as well as the surprising light weight that only a natural fabric can bring. This is a thick yarn but you can use thicker knitting needles designed for ultra super-thick yarns.

Stick Needle JP15〜8mm
Crochet Needle 10/0〜7mm
Gauge 14-15 sts 19-20 rows

Average usage

• Women’s pullover: 400g
• Men’s pullover: 500g