Product details:

Frisco Double Cube Stackable and Collapsible Cat Condo, Gray; Give your cat their own corner of the world with the Frisco Double Cube Condo. This little nook is a cozy spot for cats to retreat to and features removable, furry beds for nuzzling and cat naps. Stack or collapse the cubes when you need to make more space. Available as single or double cubes so you can stack together cat condos for the whole fur family.