The Night Therapy Spring 12 Inch Mattress is our best king size mattress and it comes with a SmartBase as a complete set. Moreover, the SmartBase bed stands at a height of 14 inches and has a clearance under the frame of 12.5 inches for storage space under the bed. It is fairly easy to store and move due to the folding design of the SmartBase that can be easily moved through narrow doorways and staircases and the mattress is under a 10 year limited warranty while SmartBase is backed by a 5 year limited warranty.
Our step-up pick is the Leesa Cool Memory Foam Mattress Cal-King and it has minimal motion transfer so you can sleep more soundly without disturbing your partner. It also gives you a universal feel to its sleeping style, shape and adaptation to your body weight. It has been made from memory foam and Avena to give you the most comfortable sleep only with the finest premium materials. The Avena material outperforms latex in terms of bounciness and durability and the mattress is also absolutely made in the USA.
The budget pick is the Best Price Mattress 12″ Memory Foam and its mattress layers are made with 3 inches of super soft foam, 2.5 inches of memory foam and 6.5 inches of high density foam. What’s more, the super soft foam has a pressure relief system that makes you feel like lying down on a cloud and floating and it conforms to the body contours due to its memory foam. Likewise, the mattress comes with a support system to replace your old bed frame or box spring, made with 100 percent steel and built to last for a long time.
A Little Background
A comfortable mattress is a very important thing to consider, especially for older people with back pains. Without a mattress that will carry your weight during sleeping, you can develop back pains and sleeping disturbances easier and it will make you feel like sleeping flat on the floor. The reason why beds with mattresses are invented is to give you quality and uninterrupted sleep at the highest comfort possible. As a matter of fact, most seniors with back pains do require a mattress that has orthopedic properties.
A big investment for a high quality mattress goes a long way. It doesn’t matter whether you throw away a hundred dollars or so for a mattress – what matters is that you will sleep on it every night and it will last for a decade or so without getting flat, depending on its usage. If you buy a cheaper mattress then you will just waste your money as it will not even last a year if you buy a very low quality one. Instead, go and invest on a higher quality mattress even for a big price so that your sleep will be much more comfortable and your mattress can last for a very long time.
Mattresses and beds come in a variety of shapes and sizes. For instance, there are single, full sized beds, twin beds and queen sized beds. There are also the larger king sized beds and the variations such as California king and California queen and many others. It is best to measure your bed (or your room if you don’t have a bed yet) to know which bed / mattress size is just for you, depending on whoever will use the room and the bed.
King sized beds and mattresses are considered the most expensive of all mattress standard sizes. They span at a very large set of dimensions and can accommodate many people at the same time, giving them uninterrupted sleep. They are usually built to last and span at a wide and thick built and are made of so many layers and high quality foam. In some cases, they even have gel infused memory foam that conforms to the shape of your body, allowing you to have a better night sleep. King sized beds and king size mattresses are usually found on the master’s bedroom.
How We Picked
Know if the mattress is firm enough to withstand the test of sleepers but soft enough to give you comfort. Some people like a firm mattress but some want a soft mattress – you should get a mattress that adheres to the best of both worlds. It should stand firm so that you will have value for your money and at the same time, it should be comfortable to sleep on without passing movement.
Price is fairly important but not a decisive factor, since most king sized mattresses will be expensive. Most king size mattresses will be priced from $400 to $2,000 depending on its thickness and the composition of its foam layers. Of course, memory foam mattresses are more expensive. If the king size mattress also includes a box spring or some support of sort, it will be pricier.
Not all king sized mattresses have the same exact measurements. For instance, some variants could be a California king size mattress so it is still a good idea to measure your bed or space for a fitting mattress.
The layers of the king size mattress should be identified. Depending on its thickness, you should know the composition of the king size mattress. Most mattresses of king size stand at a thickness of 10 to 20 inches and are usually made of air cooling layers, pocketed coils or memory foam and extra foam layers for additional support and a good night sleep.
Materials used for the king size mattress should be safe, durable or at least eco-friendly. The king size mattress should not have any harmful substance such as lead, phthalate, mercury, and should be a low emission mattress so that it will not smell bad indoors.
Some king size mattresses also come with a box spring and support other than the mattress itself. This usually means that the king size mattress can be pricey so always choose the one fit for both your budget and needs.
Night Therapy Spring 12 Inch Mattress
With our best king size mattress, the Night Therapy Spring 12 Inch Mattress, the SmartBase bed stands at a height of 14 inches and has a clearance under the frame of 12.5 inches for storage space under the bed. It also comes with a SmartBase as a complete set and it has dimensions of 42 by 24 by 24 inches.
The Night Therapy Mattress eliminates all types of back pain and keeps you comfortable. It also has motion reduction so that motion transfer towards a sleeping partner will be removed and it also provides any person with spinal alignment, making it a medicinal therapy king size mattress. The mattress has a fiber quilted cover and has comfort foam that is pressure relieving.
In addition to that, it also has an inner spring construction and the frame is made from steel and it includes 4 headboard and footboard brackets to be attached to the white bed skirt and frame. The mattress weighs 139 lbs all in all and it unfolds within 48 hours upon arrival and it must be opened within 72 hours of receipt. Moreover, there is also a 30 day return policy.
Overall, the 12 Inch Spring Mattress by Night Therapy is relatively easy to store and move due to the folding design of the SmartBase that can be easily moved through narrow doorways and staircases. The mattress is under a 10 year limited warranty while SmartBase is backed by a 5 year limited warranty.
Flaws but Not Dealbrakers
Some people only complain that the Night Therapy Spring 12 Inch Mattress might be a bit too heavy to carry around compared to other mattress, but this is given since it is a king size mattress.
Leesa Cool Memory Foam Mattress Cal-King
The Leesa Cool Memory Foam Mattress Cal-King is our step-up pick and it is made from memory foam and Avena to give you the most comfortable sleep only with the finest premium materials. It gives you a universal feel to its sleeping style, shape and adaptation to your body weight and it is absolutely made in the USA. It also has minimal motion transfer so you can sleep more soundly without disturbing your partner and the Avena material outperforms latex in terms of bounciness and durability.
The Leesa Cool Memory Foam is a combination of memory foam and solid base to give more bounce and air flow using Avena foam. It easily adapts to any sleeping position and body weight and the mattress weighs only 95 lbs.
It is highly applicable for sleeping alone or with a partner and it has a length of 84 inches, width of 72 inches and thickness of 10 inches. It is advisable to be placed in a flat and rigid surface such as a platform bed, modern box spring without coils, slatted bed, Murphy bed, wooden bed, metal bed or just on the floor and it is backed by a 30 day refund.
Best Price Mattress 12″ Memory Foam
Our budget pick is the Best Price Mattress 12″ Memory Foam which comes with a support system to replace your old bed frame or box spring, made with 100 percent steel and built to last for a long time. It easily conforms to the body contours due to its memory foam and the super soft foam has a pressure relief system that makes you feel like lying down on a cloud and floating.
The mattress layers are made with 3 inches of super soft foam, 2.5 inches of memory foam and 6.5 inches of high density foam. The mattress also comes with a 14 inch under bed storage so you can store items, equipment, clothes and many more. It generally relieves all your pressure points so you can sleep more soundly without turning, tossing and feeling uncomfortable.
The memory foam molds itself to the shape of your body. The dimensions of 76 by 80 inches and has a height of 12 inches and it makes a great option for a firm mattress. Like most mattresses, it ships rolled in plastic and lays flat when unwrapped, like most mattresses. It has a weight of around 115 lbs and it has a very sturdy base.
Best Hybrid King Size Mattress
Beautyrest Recharge Hybrid Black Rock Plush
Being made with cotton and hybrid material, the Beautyrest Recharge Hybrid Black Rock Plush promotes good sleeping posture when you sleep. It also comes with AirCool technology to keep your night sleep cool and the memory foam adjust to the comfort that your body needs
The mattress uses Pocketed Coil technology to give you a good sleeping posture and it measures 74 by 38 inches. The Beautyrest Recharge has a thickness of 13 inches and it has been made with low emission VOCs that makes it an eco-friendly king sized mattress without ozone depleters. It also does not include PBDEs, mercury, lead, phthalates and other harmful substances.
Moreover, the life of the mattress is so sturdy that you don’t need to rotate or flip it. It also has a smooth knit cover that gives you a luxurious feel. A king sized bed that will surely get you relaxed at night, the AirCool technology enhances the airflow throughout the mattress to make nights cooler while you sleep.
The Beautyrest Rock Plush is made of all the comfortable layers to meet your sleeping standards and it has an energy foam base that ensures you that you don’t need to flip the mattress. The knit cover does not have tufting or quilting and it gives you relief on pressure points and overall gives you quality sleep.
King Size Mattress with Pocket Coil
Best Price Mattress 8″ Contour Support
The Best Price Mattress 8″ Contour Support uses independent operating coils to give you a sleeping experience unlike any other that is truly supportive and responsive. A mattress of king size, the pocketed coils amount to 1,023 on this king sized mattress.
In addition, the fabric cover which gives the mattress protection is a premium knitted fabric cover that is made from polyester and has been jacquard quilted. It gives you nothing but a rejuvenating sleep as it reduces the pressure points to give you more comfort in your beauty rest.
Having been made with 2 separate foam layers that soothes you as you lay down on the bed, each of the pocketed coils will leave you undisturbed in your sleep due to the many count of the coils to provide you more support without feeling the movement from your partner. It only requires 24 to 75 hours until it unfolds back to its original size after being shipped and it is currently backed by a 10 year warranty.
Best Firm King Size Mattress
Beautyrest Recharge Montano Luxury Firm Mattress
If you want a firm mattress, you should get the Beautyrest Recharge Montano Luxury Firm Mattress which uses AirCool technology to give you more airflow and support. In addition, the GelTouch technology uses gel foams for better pressure relief that is in the form of a comfort foam layer.
An undisturbed sleep will reward you due to the motion separation of the pocketed coils that also give you back support depending on whoever lies down on it. Moreover, it is truly a very firm mattress which also uses Transflextion comfort technology.
As a very breathable mattress due to the AirCool mesh border fabric, the Beautyrest Mattress weighs 187 lbs and it has a ventilated AirCool BeautyEdge foam encasement design to give you stability and support at the very most. The crown height of the mattress is 11.5 inches with the border height being 9.5 inches.
It is a hybrid construction mattress made with cotton in which dimensions are 76 by 80 inches. It also has a thickness of 20 inches and the layer construction is as follows: the quilt layers are made up of FR fiber, a 1-inch AirCool Foam and another 1-inch AirCool foam, followed by deck layers and upholstery layers with 1/2 inch GelTouch and 1/2 inch Energy Foam. The coil unit sits at the bottom with 13.75 gauge for the pocketed coil system with a density of 1,046 for this king sized mattress. To top it off, it also has an edge support foam encasement.
Being highly certified by CertiPUR-US, the Beautyrest Montano Luxury Mattress does not include ozone depleters, phthalates, lead, mercury, heavy metals or PBDEs and it is also a very low emission king size mattress. Moreover, it has a no-flip design due to the energy foam base. It has been made with durable triton / triton lite foundation which use PoweBeam bracing to reduce motion and give more strength to the mattress. It is currently backed by a 20 year limited warranty.
Best Orthopedic King Size Mattress
Continental Sleep Mattress 13-Inch Fully Assembled
A king size mattress definitely fit for a king, the Continental Sleep Mattress 13-Inch comes as a set including box spring and orthopedic mattress and comes fully assembled. It has a thickness of 13 inches and it comes fully assembled with a soft Eurotop.
A perfect orthopedic mattress for those with back and joint pains, it also comes with a super durable box spring. It is also encased with foam to give you better support in your sleep. Being made in the USA, it is made with high quality memory foam that conforms to the body shape and the dimensions of the mattress are 80 by 78 inches.
The overall weight is 95 lbs and the wood foundation stands at 8 inches in height and it has a gauge unit of 13 3/4 SH and a 396 innerspring vertical unit. Each side has 3 inches of high density foam that is super firm and it has highly supportive edges. Being attached with a Euro pillow top that is a one-side at 4 inches, its poly foam at 3 x 3/8 inches has been quilted with a top whisper shield blue at 1 x 0.5 inches.
In addition, the cover is a jump and tack quilt and the mattress also adheres to fire code 1633 and federal standards 1632. Moreover, the filler cloth is of heavy duty and non-skid and the fabric is a class B heavy damask type. The Continental Sleep Mattress is very convenient and comes in a plastic bag for protection when it is shipped.
King Size Mattress with Adjustable Feature
Serta Perfect Sleeper Bradburn Super Pillow
The Serta Perfect Sleeper Bradburn Super Pillow comes as a bed set with a pillow top mattress for a single price. It is a highly adjustable bed and mattress combination which can accommodate up to 650 lbs of lifting capacity on each base due to the Motion Essentials II technology.
Having a back support and alignment are improved due to the Cool Twist gel memory foam that also helps reduce turning and tossing in the bed to give you a more comfortable sleep, the Cool Balance technology also helps to neutralize temperature while you sleep. The impact on partner movement is reduced due to its TrueSense 3.0 technology. Moreover, the TrueSense technology uses a 3-way motion isolation mechanism to keep movements to a minimum and it is built with Total Edge foam encasement to ensure durability.
The rolling off edges and sagging are avoided due to its ComfortLast construction. It also has a zero clearance design so you can easily fit it onto any bed frame that you might have and it has a wired remote with 4 buttons to raise or lower the mattress’ foot and head. It uses a smooth power lifting system to make you feel more comfortable in style and it has a height of 28 inches from the floor. The Serta Perfect Sleeper is backed by a 10 year manufacturer’s warranty.
Best Memory Foam King Size Mattress
Merax 12 Inch Luxury Pillow Top
With the Merax 12 Inch Luxury Pillow Top, both sides can be used to sleep on, making it very flexible and versatile. It is comprised of gel memory foam for a luxurious sleep that contours to your shape. It is a king sized mattress that will surely satisfy you and it gives relief to pressure points on the neck, shoulders and back.
It adheres to the federal standards for flamability at 16 CFR 1633 and the surface layer has Aloe Vera to give you a superb sleeping surface to cool you down. The mattress measures 12 inches in thickness.
As for the softness and firmness, the Aloe Vera goes hand in hand with the memory foam layers to give you more contouring and cooling properties during sleep and it also has an additional comfort foam layer as well as a fiber layer for better cushioning and an undisturbed sleep. The sides have coordinated knitting and the Aloe Vera fabric is 230 g polyester.
The gel infused memory foam has a layer thickness of 1.5 inches and added to that is a 1 inch premium memory foam and a 1 inch comfort foam. The support system comprises of a high density base form that is super reflexive and gives you long lasting support and resilience at 8.5 inches high. All in all, the dimensions of the mattress are 80 by 76 inches.
Best Cotton King Size Mattress
My Green Mattress Pure Echo Luxe
The My Green Mattress Pure Echo Luxe has been made with all natural cotton that is organic and eco-friendly. It is a king sized mattress that will give you comfortable sleep and it is also made with natural Joma wool all the way from New Zealand. Moreover it has a firm feel that gives you extra support and it is a truly eco-friendly and clean bed that uses no chemicals and instead uses natural wool for its flame-resistant parts.
Likewise, the king sized mattress uses a pocketed coil system with 884 counts that takes out motion transfer as it conforms to the body contours and it also has lumbar support which makes it ideal as a mattress for couples and most adults. Like most mattresses, it arrives roll-packed. Being a one-sided mattress, you can go for a 100 night trial to experience its comfort and durability. The My Green Mattress is currently backed by a 10 year warranty.
There are many other king sized mattresses around but only a few of them stand out. Likewise, only a few people buy a king size mattress due to its price and size, but nonetheless, these king size mattresses we have here are the most comfortable of all.
Other Frequently Asked Questions
Q: How different is a king sized bed from a queen sized bed?
A: According to Diffen , there are many differences between a king and queen mattress size. Of course, king size beds are larger, usually at 76 by 80 inches, whereas queen sized beds are usually at 60 by 80 inches. This size can also vary depending on its variation such as a California King or a California Queen Size bed or mattress.
Moreover, king size are considered the most expensive than most mattress sizes due to their size, shape and availability as well as the material used and thickness of the king size mattress. Also, master bedrooms are the usual spots for king size mattresses while queen mattresses are more suitable for smaller rooms and guest rooms.
Like we said above, only a few people purchase king sized beds due to their price and size so you really have to be prepared to spend more than a hundred dollars if you really want a king sized mattress or a king sized bed. Moreover, king sized beds allow for more people to sleep on whereas queen sized ones are only usually for two people.
Q: What should a couple consider when buying a mattress?
A: The price should be discussed first before buying, as king sized mattresses for couples and master bedrooms are never cheap and can range from $400 to $2,000 in general.
Also, you should know the type of mattress you want, whether you like it soft or firm. Aside from that, the size definitely matters – master bedrooms and larger bedrooms are the ones that a king sized bed can fit on, whereas smaller rooms may only require a queen size or smaller sized mattress and bed.
In general, mattresses come in a variety of formats such as inner spring, wrapped coil, latex and memory foam and latex hybrid mattresses so you should choose the best one for you. Memory foam mattresses are considered the most expensive but will give you the best comfort for pressure points and a good night’s sleep.
Do remember that if you intend to order a mattress online, make sure there is a return policy or a free trial. Most people will still want to buy a mattress on-site rather than online, but if you ever do, make sure you know that you are buying a trusted quality mattress.
Wrapping It Up
All in all, the Night Therapy Spring 12 Inch Mattress is our best king size mattress which will definitely give you a good night’s sleep, a comfortable rest and more room to lie down.
Jen Miller is a former electrical engineer and product specialist with more than 20 years of product design and testing experience. She has designed more than 200 products for Fortune 500 companies, in fields ranging from home appliances to sports gear and outdoor equipment. She founded Jen Reviews to share her knowledge and critical eye for what makes consumers tick, and adopts a strict no-BS approach to help the reader filter through the maze of products and marketing hype out there. She writes regularly and has been featured on Forbes, Fast Company, The Muse, The Huffington Post, Tiny Buddha and MindBodyGreen.