My only negative is the smell when you first unpack the mattress. After a couple of days the smell was gone and I've been sleeping better than ever before! I will be retiring other mattresses and going Casper!
The Casper Glow works fine as first, then as soon as the warranty time runs out, problems began to start. The charger base is no longer responsive, and I have to spin the lamp around for it to charge. It also makes electric cracking sounds when uses while charging, which definitely doesn't help you sleep.
The "Original" I bought two weeks ago, to replace my old Casper "original", is not of the same quality, in my opinion, as my old one. It isn't made with the same cover material - the new material is cheaper, and there is no support; the bed is mushy. It is the reason I decided to get rid of my old mattress, which lasted for quite some time - the side I tended to sleep on, was not as firm as it once was. This is how the entire new mattress feels - mushy. I am disappointed and will probably have to buy a Tempurpedic, which I owned before my last Casper. My husband and I were delighted at the fact that we could not tell the difference between that expensive mattress and our Casper. That is not the case, now.
Love it. So comfortable, actually breathes (I’m a very hot sleeper) and gives me the right amount of support every night whether I’m on my back, side, or stomach.