So it turns out, my cat does not want to be outside. He likes to look outside. But he does not want to be outside.
There's a small part on the zipper that was coming loose so I stitched it haphazardly but it's secure.
I don't think it'd fit a breed bigger than a small pug comfortably. The inside part measures about 20"x12" and with the canopy extended there's about 20" of room from base to canopy.
From a non-smoking house, used once.