Purchased from "Tsuhan Seikatsu" (Mail Order Life). It was a set of two. Currently, this product is sold out on "Tsuhan Seikatsu." How about trying it out? It's very warm, so it's perfect for those with cold knees. Due to shipping costs, I will remove the items from their original packaging and place them in a separate plastic bag. Please understand this before purchasing. The original packaging will be included. Although it is new, it has been stored at home, so please refrain from purchasing if you are sensitive to this.