This hat features an outer layer of velvet (95% polyester + 5% spandex) and an inner layer of core-spun yarn (50% viscose + 30% polyester + 20% nylon), which is soft and skin-friendly. It's reversible, allowing you to switch styles freely. With excellent elasticity, it fits a head circumference of 19.5x25cm (about 7.7x9.8IN) and suits all head shapes. Whether for daily outings or outdoor winter sports like skiing, snowboarding, ice skating, it can easily match any clothing, with strong practicality. It only needs hand washing for cleaning, simple and convenient.