Best Catio ever!! The roof is slanted to help with rain, it’s clear so the kitties can look up and see birding flying. It fits right up against the house and is easy to get in and out with the person door. My kids and I sit in there with the kitties and play. They love sunbathing. We have 4 cats that love this catio. We put it right up against the house with the window in the middle. We just crack the window and the kitties go in and out as they please. As a vet tech, I know how important it is to let them experience outside without the dangers of wild life, cats etc