Was skeptical of the strength of the suction cups, but they hold like magnets - haven't had any slippage, even when Cleo jumps into it from the couch! She loves to keep an eye on the neighborhood, and people get a kick out of seeing her suspended in her cradle as they walk by. I, too, wish I could fit in it, she looks so comfy and content. Our neighbors have these, or I'd have never known about them - now I tell all my kitty-loving friends.