Tiny brick oven? Isolation chamber? TMNT costume display? What is this thing?
It's a Hepper Pod ($100), and if you get one for your cats to curl up in, there's a very slim chance that they'll go from indifferent jerks to affectionate cuddle muffins because they'll be so happy to have a warm dark place to call their own. That, or they'll just spend all their time in there and keep ignoring you like usual.
See more cat beds.