bonbone Knee Warmer Heat-Generating Warmer for Knees, Black, Size M, Set of 2 10cm above the knee, circumference 33-41cm (Unisex) Price: ¥2390 + tax per piece This item has been stored unused, so it is in a clean condition. Due to shipping costs, we will ship via Yu-Packet Post. However, because the package is large, we will only ship the product itself and the instruction manual. Please be aware of this before purchasing. *Please note that the package (outer box) will not be shipped. Product Description Built-in high-moisture heat-generating material on the front of the knee increases perceived temperature by up to 2°C. The three-dimensional sewing conforms to the shape of the knee for a perfect fit. Fleece material is used only on the inside of the knee for ease of movement. It is generally slim and thin, making it discreet under clothing. It does not constrict tightly, so it can be used by people of all ages and genders.