









🛌 Sleep Like a Boss: Master your nights with customizable luxury!
The Sidney Sleep King Size Pillow offers fully adjustable memory foam filling, allowing side and back sleepers to personalize loft and firmness for optimal neck and shoulder pain relief. Featuring a breathable, machine-washable cover and an extra foam bag for customization, this 36"x19" pillow combines premium materials with effortless upkeep, making it a top choice for professionals seeking tailored, luxurious sleep.








| ASIN | B0993DRMFM |
| Age Range (Description) | Adult |
| Best Sellers Rank | #2,993 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #29 in Bed Pillows |
| Brand | Sidney Sleep |
| Color | White |
| Customer Reviews | 4.3 4.3 out of 5 stars (11,255) |
| Date First Available | September 16, 2021 |
| Fabric Type | Polyester, Viscose Rayon |
| Fill Material | Memory Foam |
| Global Trade Identification Number | 00860012767526 |
| Item Firmness Description | Plush, Medium, Firm |
| Item Weight | 5 pounds |
| Item model number | WKCU1936 |
| Manufacturer | Sidney Sleep |
| Material | Memory Foam |
| Material Feature | Breathable |
| Model Name | King PIllow W |
| Number of Pieces | 1 |
| Pattern | Geometric |
| Product Care Instructions | Machine Wash |
| Product Dimensions | 36"L x 19"W |
| Recommended Uses For Product | Sleeping |
| Shape | Semicircular |
| Size | King (Pack of 1) |
| Special Feature | 100% Adjustable Loft, Additional Foam FIlling Included, Contoured Hugging Curve, Machine Washable, Removable Cover |
| UPC | 860012767526 |
| Unit Count | 1.0 Count |
| Use for | Back, Neck |
E**E
Great pillow for lumbar issues
Love this pillow. It is customizable so you can take out or put more stuffing in. I carried this with me on my 14 day cruise & was glad I took it. When our cabin stewards made the bed they made sure to fluff up my pillow & prop it back on the bed. It def helps fill the gap if you have a deep arch in your back & provide support in your lumbar region to help alleviate pain. I also use it between my knees so it doesn’t feel like bone on bone 🦴 when I’m trying to sleep. I love that it vines with 2 pillows & extra stuffing. It’s comfortable & retains its shape even after washing the product. I haven’t noticed any cooling effect Great pillow
K**K
Great pillow 4 side sleepers
Wanted to wait a few months before reviewing. This pillow is great! It's like laying your head on a firm marshmallow so comfy and supportive. I really do not have anymore neck discomfort when turning my head side to side. Since I've had it I have washed the outer cover like 3-4 times. Never had a problem zipping it back on until the last time I washed it. Now the plastic zipper has separated and cannot be zipped closed.😒 I'm hoping the seller has replacement outer zippered covers available. Other than the plastic zipper failing this is a very good pillow neck support. Update: 02/15/26 I contacted the seller about the zipper issue. Customer service promptly replied back. All they needed was a picture of the defective zipper and shipped a replacement very quickly. For some reason included an eye mask which hate to say it will probably never use but thanks anyway lol.
K**O
Too big to be travel pillows; very soft pillows made out of foam pieces; have smell to them - 3.5*
I ordered these based on all the five star reviews. I really like these pillows but am not in love with them. There are two pillows in this set and they are not mini-pillows to me. There is also a package of cut up foam in case I want to put more of this foam in the pillow. In addition, there is a cloth backpack (see photo). These pillows are soft and comfortable to use. I love the crescent design. However, they are made of cut up foam. Had I known that, I might not have ordered them. I hate cut up foam. They also have a smell to them that I hope will go away over time. I am glad, however, that these are not mini in size. I consider them medium-sized pillows. The outer shell is a zippered pillowcase and then there is an interior white zippered cover holding the foam together. The extra foam can be added here. I waited until there was a discount on these before purchasing so the current price at the time I ordered was $37.49 plus tax (instead of $49.99 plus tax). For that price I think these are competitively priced. To me these are 3.5 stars rounded up to 4 stars. If this were solid memory foam and did not smell, then I would have rated them 5 stars.
M**7
Super comfortable for side and back sleepers
I purchased this item on Nov 21 2025. Im waiting until Feb 15 2026 to write the review. I love this pillow. I am a side sleeper and this has made all the difference with my head/neck/shoulder. I sleep very well and haven't woken up with a crick or pain since I got it. It's good for sleeping on your back too. It comes with extra foam to put in if needed. I didn't need to, but saved it for future. The outside is soft and has a zipper to remove foam and wash it. I highly recommend this pillow!!
R**T
I would call this the perfect pillow.
Best pillow ever slept on. This is most comfortable pillow I have ever owned. Love love it. Supports my neck, helps align my whole body. I had spine surgery last year and needed a good pillow. What i love about it is they give you extra stuffing if you want it firmer and a bag to put stuffing in if you want it softer. . I am using it the way it came. Perfect for me. Great price too.
C**.
Happy Resting!!!
This pillow system is the best! I love the customization, support and softness. I decided write a review after almost a year of constant and exclusive use to give a honest feedback. I never had an issue with neck pain, which is a first for me. I held on the my favorite old pillow just in case and found I didn't need it after the first week. I have since thrown it away after about 5 faithful years of solid wash/dry/use. I usually have to acclimate to a traditional, store bought pillow ($10-60 ones that claim they are for back/ side sleepers ) and the pain usually starts after the first night, crescendos over 7 days and then subsides over another week. Never happened with pillow. I let the base and extra filling air out for 72 hours after opening, which I highly recommend. Not tossing in the dryer, which is an option, but I can't see how that will get you the best value for the investment of your most treasured rest to shortcut the process. Just be patient and let it acclimate to the room it will spend the most time in, similar to wood flooring in your home. Because I chose the slower method, I still never have smelled any chemicals or off putting odors. I intially used the pillow as it was originally packaged in order to get a sense of the support for the first 21 days. I determined at that point, I wanted to see what adding the extra filling would be like. Not because I had neck pain, but because I notice I tend to squish the filling to whatever side I am on for the longest amount of time. GAME CHANGER! I have long term support and comfort that bounces back after constant use and learned bunching (I am trying to not bunch under my neck for support. Know that will take time because it is a learned behavior from bad support from other 'back/side sleeper' pillows that don't live up to stated claims). The zipper on the case is durable, even when I noticed I was pushing the filling to one side, it held up. It was never so bulky that your natural sleep patterns won't adjust to and even out. I went through the intial summer heat and the 'second' NYC summer without feeling like my head was cooking. I would not say this particular pillow system offers any direct cooling effect that you will noticeably feel. I would say that, the hottest summer days, with a satin pillowcase, it wasn't as bad as I have had in the past. 80-90 degree heat and heavy humidity, I didn't wake up constantly with my head in a pool of sweat. It is not a "cooling effect" so much as, you don't sweat at all, in an humidity or temperature. It's more like, a reasonable person shouldn't find fault or sweat as much with a box or shop fan. The context of like for like, not a dedicated AC or Temp/Climate control system throughout an entire house is not equivalent. Please, leave room for bias. Especially, in these reviews. I am in an apartment, and treated myself/experimented with this pillow. I love it and will recommend/gift it to anyone I can! Happy resting!
J**.
Side pillow okay
This pillow is okay. The fact that you can customize it to how you prefer your firmness is nice. I do wish there was a way to keep the pillow from going too flat over time, aside from fluffing and putting it inside of a dryer like the instructions suggest. I've found that it offers just the right amount of standoff between my shoulder, neck and head for optimal support.
L**A
It was a big treat to invest in a pillow I was a bit doubtful it would help me sleep but it's worth investing in from my perspective It takes a little while to have the right volum of memory foam for you personally but once you find the right amount it's great. It's slightly strange having a pillow this shape and it's easy not to put your head properly on it so resting the crown rather than whole side of head but you'll know because your just nit as comfy as you should be so pull it down securely under your head and although you know your heads on something but alchmy happens as once your resting on it youve not much time to think because your fast asleep which for insomniac me is great. You don't need to search for the right shape pillow case as I did but use a regular pillowcase it doesn't detract from the pillow You get a nice back with lots of extra memory foam so you'll be able to use as much or as little as suits you best I found using a bit more than I expected to need was best for me I would recommend this pillow
E**N
To anyone who gets a sore neck this is the perfect pillow to solve that problem. It's perfect but very expensive!
R**A
Been using it for a couple of months and I sleep so much better now.
S**N
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M**A
I was having pretty severe neck and shoulder pain, this pillow helped alleviate the pain considerably, its not all gone but definitely a big help! I like that you have the abiility to adjust the filling as needed. My head and neck are supported very well by this pillow.
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