This item uses indigo-dyed cotton fabric from disassembled kimonos. There is a seam in the middle of the back, so it is offered at a slightly reduced price. The lining is from unused yukata fabric. Both the front and back are cotton. The batting is 100% silk wadding. Silk wadding is warm even when thin. You'll almost forget you're wearing it. Since it has no sleeves, it's easy to move in and very useful. It can be worn under outerwear, when sleeping, or when working. It has a pocket for a hand warmer. This is a very interesting cold-weather garment. Please give it a try. ※Note This is indigo-dyed. It will fade like denim. Please wash it separately. Size Length: 62 cm Width: Approximately 35 cm Please give it a try! ^_^