






🛌 Elevate your sleep game with breathable luxury that’s as smart as you are!
The Sleep Philosophy Cal King Mattress Pad features a breathable 100% cotton percale surface and a 95% cotton fill with cloud quilting for enhanced comfort and moisture absorption. Designed to fit mattresses up to 18 inches deep with a stretchy elastic skirt, it stays securely in place all night. OEKO-TEX certified for chemical-free quality, this machine-washable mattress protector offers a naturally cool, cozy sleep experience tailored for health-conscious, style-savvy professionals.











| Best Sellers Rank | #40,419 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #54 in Mattress Pads |
| Brand | Sleep Philosophy |
| Closure Type | Pull On |
| Color | White |
| Customer Reviews | 4.1 out of 5 stars 2,042 Reviews |
| Fabric Type | Cotton |
| Size | California King |
| Special Feature | Breathable, Cooling, Quilted |
R**N
Perfect for my 11" mattress
The GOOD news! I have been looking a very long time for a 100% cotton mattress cover that's thin, NOT waterproof and not puffy, and lets me sleep cool. My current pad was very puffy but too hot to sleep on - not 100% cotton. I need a cool sleeping environment as I sleep quite warm. This is exactly what I was looking for! It's not very thick, (which some folks complained about) but that's just what I wanted. It's well made, soft & comfortable, makes no noise, and the skirt pockets are very well made with a nice material, not that cheap stuff that snags & tears like so many others. I see that others have rated it lower due to not fitting their deep mattress pockets. My mattress is 11" deep and this fit perfectly (after washing and drying), so yeah, if you have a deeper mattress, it might not fit. I sure question the advertisement of fitting 16" deep mattress, but maybe I shrunk it a little in the dryer. I will line dry next time to avoid any more possible shrinkage. I am very happy with this mattress pad and think it's worth the price of $44.
A**R
Wonderful
Bought a new bed 2 months ago and they included the New and Improved Mattress Pad. The one supplied was Tencil waterproof and was suppose to keep you cooler as the salesmen told me and since it breaths it keeps moisture away. Well let me tell you I woke up sweaty and was hot as I slept. I have all cotton sheets on the bed so I knew those were not the problem and I had never had a problem before until this new mattress pad. I went searching for an all cotton mattress pad and found this. I read allot of the reviews and most were all positive. The only Con reviews I read was about the cotton wadding up after washing. I outweighed the good ones, I knew if I had a problem I could always return it. I followed the washing instructions to a tee. Gentle Cycle, I used Cold Water and I also didn't use the "Auto Fill" feature of water and set the water to medium high so the pad had enough room to move in the drum with more water and I have a large drum in my top loading machine, I also used the high speed spin after the gentle cycle was done so it would get more water out. I dried on low setting and went and moved the pad around in the dryer to get it evenly dried. It came our perfect and no shrinkage and fit the bed wonderfully. This is not a thick pad but it covers the bed well. Last night was a dream sleeping with not being hot and waking up all sweaty. I recommend this and follow the washing instructions. Don't worry about that 5% other material. It does have spandex on the drop sides that helps putting it on the bed and holds in place. The pad didn't move or slip all night long.
J**I
Would buy again
I love these, I have one for my bed and one for my sons. They are the most natural fiber option, hey look really nice, have nice padding and work surprisingly well at keeping he mattress clean considering they are not water proof. My bf had a cut that bled through the sheets but did not pass the mattress pad! They are easy to put iver the mattress and fit well and they help keep us warm on cooler nights but don’t make you sweat. They are a good value considering the quality materials. I would buy again.
L**R
Does not protect mattress from dog pee. NOT waterproof.
Do not buy if you have animals. I liked how breathable this mattress cover was, but my puppy peed on my bed and the mattress cover provided zero protection. The pee went straight through onto the mattress. The mattress cover did not protect my mattress at all. Extremely disappointed.
D**N
Decent quality so far
Quality is ok. After first wash top is not long enough to cover standard king. Appears to be mostly cotton as described. First ordered this in 2017, again in 2025. Very happy with durability of first order. Second is lesser quality. Side fabric is flimsy, looks like it could tear, quilting not as dense. Will have to see how it does with more use. All and all glad to have an affordable option in mostly cotton. Time will tell about durability.
C**A
Love the pad... but don't be fooled by the tag when you open it!
I wanted a cotton-topped mattress pad that would fit my relatively-thin (8") mattress. I wasn't looking for an "uplifting, sleeping-on-a-cloud experience." Basically, I wanted it to protect the mattress and to be cotton to help prevent - not polyester to promote - sweating and heat. The verbiage for this mattress pad stated that it had a 100% cotton cover - AND a 95% cotton filling - bonus there! The unveiling: The pad was well-packaged in a nice clear zippered bag, so it was easy to unpack. I shook it out - I liked the amount and pattern of the quilting - and examined the tag. It said "All New Material Consisting of 95% Cotton 5% Polyester." WHAT? The description online said 100% cotton cover. I read the tag more thoroughly... it was for just the filling, not the rest of the mattress pad. It's a federally-required tag you would find on any new filling-filled item, such as a bed pillow - "Under penalty of law, this tag not to be removed except by the consumer." So don't be fooled at first glance!! Because... ... looking further, I found a nicer tag which gave the component contents: "Face: 100% Cotton, Reverse: 100% cotton, Filling: 95% Cotton 5% Polyester, Skirt Drop: 95% Cotton 5% Spandex." Very thorough. I washed the pad in our home top-load washer with no problem, and machine-dried it with tennis balls to promote maximum fluffiness. The pad fit perfectly on our queen bed; the "skirt drop" tucked in well and doesn't seem poised to escape. It lays nicely on the mattress and the fitted sheet covers it well. It is PERFECT for us, and I am glad to have spent a few extra bucks on it! Highly recommended!
H**M
Soft, Cool, Fresh Smell and Actually Stays in Place!
This mattress pad exceeded my expectations. The cotton percale surface feels clean and breathable — not overly padded or plasticky like some other protectors I’ve tried. The quilting design is not only cozy, but it also keeps the cotton filling evenly distributed, so no weird clumps or shifting overnight. One of the best features? It actually fits our Purple Cal King mattress perfectly. The deep pocket with stretch stays snug, even after tossing and turning, and even after washing. Huge plus! I noticed a real difference in how cool and dry the bed feels now — especially compared to synthetic toppers. It's soft but not puffy, and the quality feels durable yet comfortable. Also love that it's OEKO-TEX certified — peace of mind knowing it's safe and chemical-free. If you're looking for a breathable, natural-feel topper that adds comfort without overheating, this one's worth every penny.
A**.
Size up. My Queen bed needs California King
This is manic to rate: 5***** star on quality of all natural cotton, breathability and fluff comfort all natural cushion quilt top. I did not sweet last night and that was a #1 priority ( which, Egyptian cotton percale is the best combo to yet impossible for me to find). 1st night using it I could not cover my bed topper surface. I had to use as a wafer top like a cookie top and jimmy rigged with long straps under my topper to have any coverage. I had zero coverage at foot of bed for 6"short. The queen size was completely off and I need to exchange for Ca King. This Queen size will work on a full size. I wash everything before I put anything on my skin. It took 2x as long to dry and of course it shrank and I was expecting that., However not as much as it did. The skirt is quit cheep and shallow and ripped. If you have to fit a deep depth mattress, I'm suggesting it may not work. Given all the negative things, I will be ordering ca.king size, and to wrap around and cover my 3" memory foam topper. I wanted a plush thickness barrier between my foam topper and skin as not to sweat. On my requirements I can live with it's imperfections. I love the top quality of quilted top! I'll come back to post a pic after my coffee. The quality of quilt is super great and I will allow for the not-so-great points of my review.
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