This vest has slits on the sides and can be opened and closed with buttons depending on your mood. We also recommend coordinating with a shirt. Made of a very light and warm material obtained by brushing raccoon fur (The material is made by a manufacturer that has acquired ICCAW, which is a world-class certification for humans, animals and the environment.) Since t is a valuable material that can only be obtained in limited quantities, the appropriate quantity is set each year one year in advance and each item is manufactured in limited numbers.The yarns have been treated to prevent static electricity, static electricity is unlikely to occur even when clothing is layered. model number: CT24101 24101