This item is made using a cute floral Oshima Tsumugi silk fabric. The lining is also silk. Both the outer and lining fabrics are from unused, deconstructed kimonos. There may be creases. Thank you for your understanding. The padding is silk wadding (真綿), a type of silk cotton. Even though it's thin, silk wadding is warm and will keep your back toasty. Since it has no sleeves, it's easy to move in and won't get in the way when doing housework. It won't feel bulky when worn under a jacket, or when sleeping. This is a fun and interesting cold-weather garment, both in name and shape. Please give it a try! We recommend hand washing separately. Size: Length: 62 cm Width: Approximately 35 cm Please give it a try! ^_^