Description from the vendor website:

Fish isn’t just for dinner anymore. Our roomy fish cave is a fantastic space for your cat to stretch out and lounge the day away. Caves provide a safe, warm haven and can help your pet feel secure. Approximately 22″ long, 14″ wide, and 10″ high, this is a great cave for pets up to 16 lbs, or a couple of little ones who like to snuggle up together. The video shows our Momo, 12 lbs, lollygagging in her favorite cave.