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❄️ Sleep cool, support firm — wake up unstoppable!
The Casper Sleep Essential Cooling Foam Pillow is a king-size, firm memory foam pillow designed specifically for side sleepers. Featuring a 5-inch thick supportive foam core combined with a cooling gel layer and a breathable, temperature-regulating cover, it ensures pressure relief and prevents overheating throughout the night. Backed by over 11 years of Casper’s sleep innovation and trusted by millions, this pillow offers durable, premium comfort that maintains its shape and freshness with easy care.


















| ASIN | B0C35MFMXJ |
| Age Range Description | Adult |
| Best Sellers Rank | #8,527 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #53 in Bed Pillows |
| Brand | Casper |
| Brand Name | Casper |
| Color | Single Pack |
| Cover Material | Polyester |
| Customer Reviews | 4.0 out of 5 stars 386 Reviews |
| Fabric Type | 100% Foam |
| Fill Material | Memory Foam |
| Indoor Outdoor Usage | Indoor |
| Item Dimensions L x W | 34"L x 18"W |
| Item Firmness Description | Firm |
| Item Thickness | 5 Inches |
| Item Type Name | Sleep King Foam Pillow – Cooling Memory Foam, Supportive Comfort for Side Sleepers, Breathable & Pressure-Relieving |
| Manufacturer | Casper Sleep |
| Manufacturer Part Number | 951-000612-002 |
| Model Name | Casper Essential Cooling Foam Pillow |
| Model Number | 951-000612-002 |
| Number of Items | 1 |
| Other Special Features of the Product | Breathable, Cooling, Neck Support |
| Pattern | Plain |
| Pillow Type | Bed Pillow |
| Product Care Instructions | Dry Clean Only |
| Recommended Uses For Product | Cooling |
| Shape | Rectangular |
| Size | King |
| Style Name | Essential Cooling Foam Pillow |
| Theme | King |
| UPC | 192472029198 |
| Unit Count | 1.0 Count |
T**.
Great cooling pillow
The Casper Sleep Essential Cooling Foam Pillow has completely elevated my sleep experience! From the moment I first rested my head on it, I could tell this pillow was something special — soft and comfortable yet supportive in all the right places. What I love most is how cool it stays throughout the night. The breathable foam doesn’t trap heat like traditional pillows, so I wake up feeling refreshed rather than warm or sweaty. The balance of plushness and structure is perfect — it cushions your head and neck without flattening out, which has helped improve my overall comfort and sleep alignment. The pillow also adapts well to different sleeping positions, whether I’m on my back, side, or stomach. It has a high-quality feel and holds its shape night after night without getting lumpy or compressed. Easy to care for and durable, this pillow is worth every penny. If you’re looking for a cool, comfortable, and supportive pillow that genuinely helps you sleep better, the Casper Sleep Essential Cooling Foam Pillow is a fantastic choice! 😴🛏️💤
C**V
Great Quality, Firm Pillow
I am giving this pillow 5 stars, though it did not work for me. I think it will be an excellent find for some who are looking for the qualities this pillow has. First of all, it is excellent quality. It does have a factory smell that I believe will dissipate after a couple days. It is definitely a firm. Like very firm. I am shocked to see people saying this is not a firm pillow. I have been looking for a firm pillow. I have tried 5 so far. They have all been too soft. Then comes this one and somehow it's too hard. I was so bummed. It's also very tall and because it is firm, I didn't sink in far enough into it and it made my neck hurt. I think it'll be awesome for someone else though. I envy that person because this is a great pillow. One thing I want to point out is that in the images for the pillow, it states it is 6 inches. In the product description it says 5 inches. It is in fact 6 inches. I was glad for this at first thinking I maybe wouldn't sink to the bottom. Instead it ended up being too tall. Overall this is a very quality pillow. Firm and supportive. I hope this helps someone in the pillow buying crisis like myself.
A**A
Nice but not what I was hoping for
Comfy pillow but could be a lot more firm. I still have to use a second pillow to get the support I need. Works better solo when I sleep on my back but I'm generally a side sleeper so stuck with two pillows. Was hoping for a firmer pillow.
M**F
Best pillows
These pillows are the best I’ve ever had! They always look firm on the bed and are incredibly soft. The quality is exceptional, providing just the right balance of support and comfort. The durability of the pillows ensures they maintain their shape and plushness over time.
S**T
Very firmI’m
Very well made, but they are hard as rocks, firm is an understatement. I returned them immediately because I felt like I was sleeping on a board if you like a very firm hello there would be great, but not for me.
N**R
Horrible, firm pillow. Not like earlier version.
Yee gads this pillow is uncomfortable and like sleeping on a brick. Too little give in the foam to be comfortable to sleep on, even for me as a 6'3" side sleeper with large shoulders. I bought this to replace a lost previous version of this and it's significantly more firm than that. This pillow as murder on my neck and gave me horrific stiff necks and migraines when I slept on it.
E**O
Found a good pillow
Let me start off, it’s taken me a long time to find a pillow that works for me after my old gel pillow starting leaking. This pillow is the closest I got to an identical replacement. I got a hands on look of it at a local box Store but was out of stock and had a 5 day delivery time. Amazon was next day delivery. The pillow is great. Perfect thickness for my comfort. I toss and turn a lot in my sleep. Being a side sleeper it fits great. The cooling gel keeps my head cool at night. My daughter likes to use it as a sitting pad in the floor and the foam always got back to its normal position. Matched with a good Amazon pillowcase i think going to last me a long time.
D**L
BIG ROCK
Much higher than expected and very firm. It does relax some, but then you need to climb out of it to find a cool spot. Put it in the garage for a spare if needed.
D**E
good
good
N**R
Invest in your sleep!
This pillow completely changed the way I sleep. The foam gives just the right amount of support without feeling too firm. It also stays cool through the night which is a big deal for me since I tend to overheat. I used to wake up with a sore neck and now I wake up feeling rested. I didn’t realize how much difference the right pillow could make until I tried this one. If you’re worried about spending so much on a pillow, I’d like to assure you that getting a restful sleep IS worth it!
M**E
Great pillow
Worth the wait to get this pillow in Europe. Was available in king size for a good price and is definitely worth it.
G**R
Cooling works very well, but...
The pillow is either hard to break or it's just a little too thick for my neck. I still sleep very well on it however, laying on the side or on my back. If it was a few millimeters thinner, the fit would be perfect. It gets difficult to fit a pillow cover because of the thickness as well.
R**S
Too big
This pillow is massive and gave me neck issues, feel like its too big for anyone. Gf hates it
Trustpilot
2 weeks ago
1 month ago