Features: Material: Uses high-quality Mikawa clay. Manufacturing: Fired in traditional Daruma kilns, etc., and handmade one by one. Function: After putting in charcoal, sealing with the lid allows for safe extinguishing of the charcoal fire without using water. Environmental Considerations: The extinguished charcoal (keshi-zumi) can be reused. Overall, I think it's in good condition. Please check the images.