It's a square mat, approximately 39 centimeters on each side. There's no tag, so I don't know the material, but it's warm and slightly fluffy. I found it in a drawer that I hadn't opened in over 20 years. At first glance, I thought it was new, but there are some moth-eaten spots and stains. It's old, so I don't know what caused the stains. Please refrain from purchasing if you are concerned. I considered washing it, but I'm not sure if the material is safe to wash in my old washing machine, so I will spray it with disinfectant and dry it in the sun before shipping. I don't know what it's for, but it has a silky texture, like a cat's back. Perhaps for a house cat to lie on. Shipping is 450 yen, so I apologize for the high price!!