It's a great idea, but I'd prefer to see it executed with screened sides. It's going to be really, really hot in the sunshine. Plus it looks like kitty only gets fresh air and sounds/scents through the little ventilation holes in the sides. I think a nice sturdy wire mesh for the sides -- dense enough to keep the bugs out. Plus a cover for the inside so you can close it off when it's raining or too cool. I didn't vote because it's not a clear "yes" or "no" ... it's a "maybe if"
I would rather have a home built kitty enclosure. It wouldn't take a carpenter, and kitty would have a great play yard! If there was no room for an enclosure, I might consider the other.
Chicken-Wire Creation: Edwin and Juanita Ludwig of Hemet, Calif. built an 8-foot by 9-foot enclosure using mostly 2-by-2s to frame with and 2-by-4s for the base. He covered it with chicken wire and painted it white. Their cat, Raven, is more active now, stalking birds, flies and butterflies from inside the structure, which also holds chairs and other furniture for the Ludwigs to sit, relax and watch Raven’s antics. The enclosure cost about $100 in materials and took less than a day to build.