Made with technical fabric, breathable lining and durable fabric, high quality silk imitation cotton filling. The inner layer maintains body temperature and the outer layer resists the cold. Waterproofing index: 10,000 mmh2. Use high-tech wiper fabric. It can effectively block the invasion of rain. It uses breathable technical fabric that is ventilated from the inside out, and the breathable mesh zip underneath the arms can quickly absorb the sweat and keep it dry.