This is an adorable adzuki bean pillow with a hand-woven Saori fabric cover. Includes usage instructions. When heated in the microwave for about 2 minutes, the warming effect lasts for 1-2 hours. It can be used repeatedly, making it an eco-friendly warmer. In the summer, chill it in the refrigerator for cooling relief. The inner cotton bag can be removed, and the outer cover is washable! Thank you for looking.