It is made of our standard fabric, "washable silk."
The neck (down at the front and width at the top) has also been adjusted to be wider accordingly.

If you already own a "washable silk" garment, no explanation is needed, but the quick dry time and strength of the fabric, which can withstand multiple washings, surpasses, if not surpasses, cotton in quality.

Silk 100%

Made in Japan

(cm)	Shoulder	Chest	Length	Sleeve
1	48.5	57	67	27.5
2	49.5	58.5	68.5	27.5
3	50	59	69.5	29