8 Most Comfortable California King Size Mattresses — That Is What Happiness Feels Like

Our top-rated California King mattress is the Purple California King Mattress. Measuring up at 9.5 inches in thickness, it isn’t the thickest mattress in the world and is a little on the heavy side too, weighing in at 140 pounds, but its smart construction, high-quality design, and exceptional comfort and support ratings really give it the edge over the competition.

One of the fascinating things about this mattress is its hyper-elastic polymer design which actually manages to be both firm and soft all at once. This means that it can provide firmness and support for your body, while also offering that soft, cradling feel you might find in a memory foam mattress. It’s a state-of-the-art design, and you can feel the quality of this mattress shining through each night.

It’s the most expensive entry on our list, but the Purple California King Mattress is worth every penny. It offers amazing motion isolation, making it a great option for couples, and it’s perfect for all kinds of sleepers too due to its firm/soft design. It also features a cozy cover made from high-quality materials and is highly breathable, allowing it to stay cool and fresh on even the hottest nights.

Next up, the Tuft & Needle Original Mattress is another of the best Cal King mattress models you can buy right now, and this one is particularly impressive for those who struggle with backaches or pains when trying to sleep. If you need a lot of support during the night for strong spinal alignment, the Tuft & Needle is an excellent option to choose with its medium rating of firmness and T&N adaptive foam design.

There’s a lot to like about this particular mattress, but we do have to mention a couple of little downsides like the fact that some users have complained about it sleeping slightly hot, and others have said it was simply too firm for their needs. These are both subjective issues, however, and the vast majority of user reviews for this mattress are immensely positive, with most people praising the Tuft & Needle for its support, comfort, and quality.

Made from the brand’s special adaptive foam, this mattress shapes and contours to your body, offering a cozy, cuddling kind of effect that many sleepers will enjoy. It’s ideal for back sleepers and side sleepers in particular and very durable too, offering strong edge support and stable performance in almost every category.

Our Budget Pick for this list of best California King size mattress models is the Zinus Green Tea Memory Foam Mattress. Available at a very attractive and affordable price, some shoppers might overlook this particular model out of fear of its quality. In actual fact, the Zinus Green Tea Memory Foam Mattress is able to outperform many of the more expensive alternatives out there and is a very well made, great value mattress to consider.

Conveniently delivered in a box right to your door and made from a mixture of support, comfort, high density, and memory foams, this mattress has the unique distinction of being infused with green tea extract. This helps to cancel out any odors and helps the mattress stay fresh, clean, hygienic, and comfortable for a very long time.

It contours nicely to the body of the sleeper and is ranked as a medium-firm mattress, so will please most people. It does take a little time to expand to its full thickness, however, so you’ll need to leave it a little while when it arrives. Some users have also complained of this mattress sleeping hot, but this will vary from one person to the next. All in all, if you’re on a budget, this is a terrific mattress to choose.

Coming from one of the best brands in the business, the Layla Sleep Memory Foam Mattress is definitely one of the very best memory foam mattresses you can find in the Cal King size. It comes at a high price, but the quality and comfort of this mattress, as well as the impressive benefits it can provide to the average sleeper, do more than enough to justify the cost.

The first thing that stands out about this mattress is its stylish, two-tone design, but that black and white look isn’t just for aesthetics; it symbolizes the “flippable firmness” feature of this particular mattress. The Layla actually has different firmness ratings on each side, letting you flip it over to find the one that works best for you, and this really helps to make it a highly versatile mattress that can work for all kinds of sleeper.

Made from top-quality foams and designed to the highest standard, this Cal King mattress brings a lot to the table. It has an excellent cooling effect, thanks in part to the highly breathable cover, and it provides enough comfort and support to please almost anyone. There is a little bit of an odor at first, but this should fade away within a week or two.

Most mattresses have a set firmness rating, but the Muse Sleep Cooling Gel Memory Foam Mattress stands out for the unique fact that it can offer firm, medium, or soft comfort depending on the model you choose. This is a significant advantage of this particular model and helps it appeal to a vast range of sleepers. It also wins our award for the Best Cooling California King Mattress due to its highly impressive cool gel layer and breathable cover.

The removable and cleanable Diamond Breeze cover actually works to absorb ambient heat from the air around it, ensuring you always enjoy a cool night’s sleep and never have to worry about getting hot and sticky in the early hours. Many people complain about sleeping hot on memory foam mattresses, but that’s not something you’ll have to worry about with this one.

On the downside, the Muse Sleep Cooling Gel Memory Foam Mattress is one of the more expensive California King mattress models available right now, but if you want that extra sleep quality and have the budget, the price shouldn’t stop you. Like many memory foam mattresses, it lacks a little edge support but offers the ‘made in the USA’ quality and comfort you need.

If you’re looking for a California King mattress set, complete with some of the best California King mattress pillows, the Nectar Memory Foam Mattress could be just what you need. This high-quality gel memory foam mattress comes complete with two free pillows. Nectar is generally regarded as one of the top names in the memory foam world, making use of eco-friendly materials and techniques to craft high-quality mattress you can love.

This mattress continues Nectar’s traditions and commitment to quality. Made from medical grade memory foam and transition foam, as well as a base layer of support foam, it offers a lot of comfort and coziness, while also offering a strong layer of medium-firm support for those with backaches or problems.

This mattress works very nicely for side, back, and stomach sleepers, so it’s a very versatile model. Plus, it comes with a lifetime warranty and an extended 180-night sleep trial, letting you test it out for nearly six months. It does lack a little bounce and resilience, and the edge support could be better, but these are minor flaws in an otherwise impeccable California King mattress.

If you crave that medium firmness, with just the right balance between a soft, contouring feel and solid support, the Brentwood Home Cypress Bamboo Gel Mattress might be the ideal California King mattress for you. At 13 inches, it’s a very thick and heavy-duty mattress that can really add some elegance and style to any bed. It’s made in the USA and features a bamboo rayon cover and CertiPUR-US foams.

Made in California with responsibly sourced, high-quality materials, the Brentwood Home Cypress Gel Cal King mattress from Brentwood works well at relieving pressure around the body by distributing your weight evenly and harmoniously, offering just the right amount of support for your spine, head, and limbs. It’s a good match for side and back sleepers in particular, but stomach sleepers might find it a little less comfortable.

The cover of this mattress does a fine job of wicking away heat and moisture, helping it stay cool and fresh on those warm summer nights, and the long warranty gives you the peace of mind you need when purchasing such an important item for your home. This Cal King mattress also performs well in motion isolation, making it a good fit for couples.

Last but not least, we come to the Live and Sleep Luxury Memory Foam Mattress. Measuring up at 12 inches in thickness and constructed from a mixture of support foam, memory foam, and gel foam for cooling, this California King mattress has a lot of plus points, starting with its relatively low price which helps to make it one of the most affordable options on our list.

If you struggle with back pain or sleep on your back, the Live and Sleep Luxury Memory Foam Mattress is definitely one of the best options to consider. It offers great support and firmness for those who need it. Some might even call it a little too firm, but you can always in one of the best pillow top mattress pad for California King to add a little softness if needed.

This mattress, like so many memory foam mattresses, struggles a little in terms of edge support and bounce, but it performs very well in most other areas. It’s a comfortable and cozy mattress at a very reasonable price, fully CertiPUR-US certified and even coming with a free queen size pillow as a nice little bonus.