Thank you for viewing! This is a saw-tooth shaped gua sha plate I purchased on Amazon in October. It's a size that can be used on a wide area, such as the face, neck, and shoulders, making it very easy to use. I have washed it once with a neutral detergent. I think it's in good condition because I haven't used it much, but there may be some fine scratches due to the material. Thank you for your understanding. I will send it in the included pouch via Yu-Packet Post Mini. Thank you very much!