That the company has the cajones to label this as "premium memory foam" is what gets to me the most. Okay, since this is an overwhelmingly negative review, let's start with the few positives: 1. The foam has a very slight sour smell (nothing worrisome, mind) when unpacked, and none of the stronger smells associated with memory foams. What little smell it has disappears within a couple of hours. Add in how quickly it expands, and it's something you can drop down and sleep on as quickly as 6 hours later without issue. 2. The foam looks clean and is even in coloration, and has a generally decent appearance. Okay, now the negatives! 1. This stuff isn't quality memory foam, nevermind "premium". Inherently, memory foam is supposed to serve the same function as springs within older mattresses- much as with their purpose in traditional vehicles or within similar mechanical applications, springs serve as a cushioning and support device when used in bed. Modern foams used in bedding serve a similar purpose, but diffuse pressure more evenly, yield more comfortably and supportively, and lack the firm metal pressure of springs. Hence the common palm-pressure display used on memory foams- showing that the foam properly "gels" into a supportive cushioning [rather than flattening] and slowly rises back up [showing that the consistency of the foam is thick and yielding, with a steady "spring" effect, rather than being airy and cheap and puffing back up instantly like a dish sponge]. This mattress goes finger-nail flat at the slightest pressure, and rises back instantly. There's no "memory foam" effect whatsoever- rather, this acts like any bottom-tier cheap foam mattress. Y'know, the ones you DON'T want to be thick, since they pancake easily. However, between lacking the shape such mattresses use to their benefit, and flattening even easier than them, I'd say you'd be better off buying a $10 foam topper instead. 2. Which brings me to my next point.. laying on this and immediately sinking down an inch and a half and then continuing to sink is bad enough, but IT HURTS. Not only is it painfully firm (thanks to the pancaking) and extremely uncomfortable and lacking any support whatsoever, but the fact that it folds in based on where your weight is distributed means that after five minutes I was having pinched nerves in both my shoulders, as well as in my back. Just after five minutes! And then there was the difficulty of getting OUT of that mess! I mean, sinking two inches down means that between a quarter and half your body is sunk into foam. Without any firm yield on the rest of the foam (as you'd get with a traditional cheaper foam) you're left floundering if you don't have a wall or something to push off of. So you dig yourself out of your foamy hell, and your body is screaming at you for multiple reasons. It's.. *fun*. 3. This topper isn't only firm and all-around terrible, it's HOT. Even with a cool sheet down on top of it and no covers on, in a cool house, I was sweating after that five minute test. It was hotter than covering myself in my thick winter comforter. I guess if you're ever stuck in a polar wilderness for some reason, maybe this topper'd be of use.. I mean, sure, you'd never be able to get yourself out of it, but at least you'd have a bit of warmth before the cold- or perhaps the topper- took you. 4. Did I mention it's firm? Even after I tried covering it in comforters and pillows (which negated the entire purpose of the topper to begin with) it was so firm that it felt harder than just sleeping on either of the floor or the boxspring for my mattress. Meaning that instead of softening a mattress, it actually firms up a mattress so bad that you're better off sleeping on something that ISN'T a mattress- or even cushioned at all! 5. Also, you know how I mentioned the topper flattens easily? It actually flattens so easily that a full half-day after putting it out, it still condensed EASILY to fit back into its box. Now, anyone with any prior experience with memory foam would know.. that shouldn't be possible. Nevermind easily, it's normally a struggle to get memory foam condensed back into its original box *at all*. But with this topper, I simply folded it over, pushed down on it for half a minute, and then it fit right back into the box without any struggle. ..It really just boggles the mind. 5. The packaging is.. clingy. The topper is wrapped and twisted around both a weave cover and a plastic cover, before being circled by a plastic tube layer. The tube layer is easy to pull off, but the inner layers stick firmly to the topper (which is folded somewhat weirdly to begin with) in such a way that if you don't have a LOT of space and some assistance in pulling it apart, the topper is going to flail around during your attempts to seperate it. And it did! Things were knocked off a nearby cabinet, breaking. Is that partially on me for having a small apartment? Sure! Not everyone is going to have issues with this part. It does, however, feel like they could have put in a bit more time in making sure the packaging was a bit more consumer friendly. 6. Finally, note that the material seems very cheap. There's a lot of reasons to question this topper being listed as memory foam, rather than as polyurethane (or "standard"/"traditional") foam, but the fact that it came out of the box with its various holes (inserted for breathability) having tears and flaking at the edges, as well as multiple points of deep flaking/light tearing.. that definitely makes me wonder if this is, in fact, fully/properly a memory foam. 7. This topper was responsible for seventeen massacres and the corona virus. :checks notes: Whoops, sorry, guess not. I'm actually out of complaints, now! So no, this topper may not have commited any mass tragedies, but all the same, it's still not something I'd recommend to anyone. I've had several polyurethane, memory, and latex foam toppers over the years, and this is by far the worst I've encountered. Further, when comparing to any "premium" memory foam, nevermind to even just the very cheapest latex foam, this.. absolutely does not in any way compete. As much as this foam made me regret moving back away from latex foam, the main issues it had were definitely not based in the type of foam used but, rather, in the quality of the foam itself. Again, the initial presentation seemed nice, from mattress appearance to box presentation (othat than that frustrating packaging, and the weird typesetting of the Es in their brand-name) but the actual utility.. just doesn't seem to be there. It's a brand I wanted to like based off its initial impression but, in the end, all this brand really gave me was a conviction against buying any further memory foams off of Amazon (versus from a physical store). :S