The outer fabric is 100% linen, the lining is cotton yukata fabric, and it's made from a beautiful fabric called "Ginga Dye" (Galaxy Dye). The filling is 100% silk wadding. It's light and easy to move in, and since it has no sleeves, you can wear it under outerwear or while sleeping without feeling bulky. You'll almost forget you're wearing it. It has pockets to hold heat packs or your smartphone. It's an interesting piece of cold-weather clothing. Please give it a try! A Size: Length: Approximately 57 cm Width: Approximately 35 cm Please give it a try! ^_^