I was so curious how this square shaped pillow would work, but to my surprise, it is absolutly amazing!! I am a big side sleeper and I have been falling asleep much faster using this pillow bc it provides the ultimate support and comfort. BUT....during my sleep, I will often roll on my back and when I'm laying on my back, this pillow is NOT COMFORTABLE. It's obvi meant to support side sleeping positions and not laying on your back or stomach, but often you end up in those positions out of your control. IDK how to combat the issue of when I roll over on my back, except for re-shifting on my side.Best pillow I’ve ever had. So comfortable, I love how it stays cool.but only if you're exclusively a side sleeper. It's much less comfortable on back or stomach.I highly recommend following their size guidelines - it's much more firm than you'd think and supports very well. Don't make the mistake I did of going up to the larger size because you think it'll provide more support.The pillow is definitely cooling. But I put it in my regular pillowcase, and that kind of negated the effect a bit.The real problem is the size. I am 5'9" and have broad shoulders. I got a "standard" size for people that are height 5'3"-6'1" thinking I should fall right in the middle. Well, it is too tall for me. Rather then my head tilting downwards like most pillows, it tilts upwards. So... same problem, different angle.In addition to that, I'm not really sure what this pillow offers that other memory foam pillows do not. Aside from the square shape, it's the same thing you'd get at a big box store.Pillow is large and provides firm but comfortable support to my neck. It is the thickest foam pillow I have seen. I was worried it would be too high, but have found it comfortable. I am a side sleeper and it has helped alleviate neck and should pain. Only down side is that it is easily confused for a cat bed. Luckily it is large enough to fit an average size adult house cat and a human head. Cushion is so good, cat is undisturbed when I switch sides.Supportive and cooling pillow. I’ve been using it for a while now and it completely took away my snoring. It is much more comfortable to sleep on my side with this pillow. It’s expensive but overall I am happy with the purchase. Worth it for me.I've bought dozens of pillows that did not support my neck. Now I'm sleeping deeper, longer! This is what I've been looking for!The foam is way too thick for a "standard" size. I'm 5'7 male with really broad shoulders (23 inches across including chest). I only sleep on my side and my advice for anyone like me would be to look for a cheaper memory foam pillow.