Trixie Window Lounger

Both my cats (~5.5-6kg each) are big fans of this window hammock, and they keep taking turns using it. It stays very securely in place, even when they jump on it.

The suction cup holds really well. It's the best one I've ever bought. I'm getting a second one so both cats can look outside.

Stays really well on the window. My cat took to it straight away. I highly recommend it.