The zephyr Mattress is pretty expensive for what you get. The memory foam feels cheap compared to my tempur pedic which it was replacing. My tempur pedic was 10 years old so I figured it was time for a new bed. Should have kept the tempur pedic.

One corner of the zephyr is 2 inches lower than the rest of the bed like the foam was not cut level. My head feels like it lays lower than the rest of my body because the "zone support" in the middle makes the mattress thicker in the centre. I measured the bed at the top and in the middle and there is an actual discrepancy in the height. Because of this discrepancy, I wake up light headed. 

I am a young and active person and this bed makes me feel stiff.

The temperature regulation is non-existent. It holds onto heat like crazy.

I will be returning it as soon as I can. Spend a little more money and get a tempur pedic!