picone special order pink, size XS Girth 26-34cm, width 11cm I tried to put it on once, but the pet didn't like it, so I stored it. The reason for wrapping the back instead of the belly is because the meridians (acupoints), blood vessels, nerves, and organs of dogs and cats are concentrated on the back. Like the Promo Thermo Mat, highly purified black silica is refined and blended into the base material. It stores body temperature and solar energy, and also emits far-infrared rays with a wavelength of 4-14μm, called "growth rays," which are also contained in sunlight, at a high level. This gently warms the back from the inside without using electricity or steam, and heals the body.