This is the Hakusan Zero Harness. The size is M. Please refer to the images for details. I bought this for my 12kg Shiba Inu, but even when adjusted to the smallest size, it was too loose, so it was only tried on. It has been stored at home for a while, and there are some brown stains in places on the inside. Please refrain from purchasing if you are concerned about this or if you are looking for a perfect, brand-new item. Returns are not accepted. Thank you for your understanding. I purchased this after checking the size chart, but the sizing is large. It might even be usable for a medium-sized dog with a large build, although this is just a guess. The purchase price was 4950 yen.