From official page:

Fine thread count cotton is knitted into lily yarn and mercerized to give off a gloss and a surface shape like tape. Regardless of what knit fabric you make it into, its refreshing feel is extremely suited to spring and summer weather. This is a medium-fine thread but you can also use knitting needles designed for moderately thick thread, another draw of this yarn.

Stick Needle JP 4〜6
Crochet Needle JP 4/0〜6/0
Gauge 26-27 sts 32-33 rows

Average usage

• Women’s pullover: 320g
• Men’s pullover: 360g