White. Purchased in the hope that it would stop my elderly, slightly senile cat from wandering around and meowing loudly. The cat would stop meowing when it stopped moving. However, since the cat had been free to roam for 19 years, it wouldn't stay in the cage. I've only used it for a total of about 5 minutes, twice. I'm selling it because it's no longer needed. For reference, it's currently selling on Amazon for 10,270 yen.