This is a set of two BackJoy products. I bought two of them in a moment of enthusiasm, but I haven't used them much. I'm offering them to someone who wants them. Recommended for those who want to buy more or try them out. I'm not selling them individually. Please consider purchasing the set of two. There are no major scratches, but they have been used to some extent, so please check the photos. m(_ _)m I will pack them simply and ship them via Mercari delivery.