Here is another catio that gives your kitties to relax while enjoying the world outside. The Habitat Haven Window Catio is a cage that attaches to the outside of your window. Your kitties can climb through an indoor hatch. With these, you can let your kitties go outside with peace of mind.
This cat enclosure can also be installed on any flat surface, including walls, and fences. You can add tunnels, bridges, and stairs to make it even more fun for your kitties.