I grabbed the very last 10 inch King size on here and I'm so glad I did. I had my new Zinus bed frame ready for it when it showed up. I opened the box, cut the hard plastic with the provided cutting tool, layed it out flat, took the plastic off and let the magic happen. My wife and I gave it about 2 days or so and we felt it was to full capacity. We have slept on it for 3 nights now and this bed is amazing! I haven't woken up like the tin man, nothing hurts, I am a "BIG" guy so I was so glad to have something medium firm like it said. It's soft yet sturdy enough and when I move the bed doesn't disturb my wife at all on her side it's great! I would definitely buy again and again.