It’s less than an inch thick folded.

Samsung z flip 5.

The one I have has really come a long way. I’m using it without a case. I’ve dropped it several times from a decent height. I was using it’s light at work to show a hole in a wall to my coworker and he jammed a blunt piece of steel into its exterior screen with serious force. Not a scratch.

This bothers me a bit because I absolutely love my current gen horizontal fold phone. The crease isn’t ugly or growing in the year or so I’ve had it. You can feel it, but I got used to that in days.