So far very comfortable, a new type of comfort for me

I bought two of these and you did not require the Serial numbers

I feel I've been getting a better night's sleep and my back doesn't seem to hurt.

Great mattres don't wake up with back pain anymore

Great for side sleepers. So comfortable.

Very comfortable and we love it!

So Far very comfortable

Comfortable and soft

My husband has a bad back so mattresses are important. This mattress so far is working great with good support.

I traded a firm which was very soft- I’d guess medium at most, but the extra firm is perfect for those who prefer a firm bed.