This is a felt desk mat from Hashimoto Gishi Seisakusho. The size and color are 330x830 (gray). The felt provides a pleasant quietness, making the typing sound of my keyboard, which I always use, one step more comfortable. I purchased this as a recommended item from Risou no Shosai-zukuri (Ideal Study Room Creation), and it was a very high-quality and satisfying product. However, due to a change in my work environment, I am reluctantly putting it up for sale. While there is some wear and tear, I believe it is still in a condition where it can be used for a long time.