8 Best King Size Mattress Product Reviews 2020

Whether you sleep alone or not, it’s worth considering investing in a bigger mattress to sleep like a royal. It’s more than a luxury but a necessity if you don’t like being squeezed like sardines in bed. The best king size mattress provides more space for you to move and sleep better. Depending on your preferred level of firmness, you can get a mattress that is a little firm or a little soft. You can also choose from different types of mattresses from memory foams to innerspring, and more. So, read on and find out how you can find the right one that fits your needs and taste.

Top King Size Mattress Reviews 2020

#1. Olee Sleep R-10SM02K Omega Hybrid Gel Infused Memory Foam and Pocket Spring Mattress (Best Budget Pick)

Available in less than $250, this is certainly the Best Budget Pick in this list. This hybrid mattress is designed to offer contoured support to users who need more body support. Its CertiPUR-US proves its certification of content, emission, and durability. Its luxury tempered steel coils are independently encased to conform to the curves of your body. It creates an equal weight distribution to ensure quality and undisturbed sleep. At the same time, its combination of foams helps relieve pressure points along your hip, shoulders, back, and neck.


  • Weighs 110.9 pounds with 80 x 76 x 10 inches product dimension
  • Consists of 5 layers that include 1 fiber padding, 2 Dura I-gel foams, 1 Dura HD foam, and 1 Dura spring
  • High-density foam reduces the amount of heat that gets trapped in the mattress
  • 1-inch Duraflex foam provides great elasticity support
  • Patented Dura pocket spring encased coils provide consistent support for a longer period
  • Dura cool I-gel infused memory foam provides weight alleviation and a cooling feeling
  • Oeko-Tex certified guarantees that it is tested and safe from harmful substances

Olee Sleep 10 inch

Getting a king size mattress doesn’t mean that we have to break the bank. There are cheaper alternatives like this Olee Sleep mattress. As our Best Budget Pick, it’s an affordable pick for those budget-seekers who dreams to have a king size mattress. Its layers of memory foam and multi HD protects the coils to ensure its unparalleled quality and comfort.


  • Affordable and free from harmful substances
  • Absorbs maximum weight from the top layers
  • Prevents sinking or sagging in the middle part easily
  • Promotes proper body posture regardless of its bed frame
  • Not too firm and not too soft
  • Certified for durability, emission, and content


  • Not recommended to be used on adjustable platform bed frames
  • Takes a little more time to soften it up once unboxed

#2. Signature Sleep 5475396 Memoir Memory Foam Mattress (Editors Choice)

As the Editor’s Choice, this mattress comes with a pretty thick layer of high-density foam which gives it support. It also has memory foam that gives it additional support and comfort as the top layer. Its layers of foam allow it to distribute weight properly to provide balanced body support. So no matter how much you toss and turn, your partner’s sleep will not be disturbed. In case you suffer from pain along your shoulder, neck, hip, or back, it can minimize pressure points. Thus, you can sleep in any position without worrying making the pain worse.


  • Weighs 80.5 pounds with 80 x 76 x 12 inches product dimension
  • 4 inches of memoir foam serves as its top layer that provides incredible comfort
  • 8 inches high-density foam allows the mattress to contour to your natural body shape for a better sleep
  • Breathable knit fabric cover provides a comfortable and soft feel on the skin
  • Fire-retardant barrier gives you peace of mind overnight
  • Responsive and luxurious balanced mattress support helps eliminate the motion transfer
  • Exceptional edge support ensures your safety even if you tend to roll a lot in sleep

Signature Sleep Memoir 12 Inch

Being the Editor’s Choice, this mattress is certainly one of the best picks in this list. Composed of just 2 layers of different foams, it is enough to provide sufficient support. Most importantly, it is comfortable and 100% safe to sensitive people since it is made with CertiPUR-US certified foam. It even includes a soft cover that is breathable to avoid trapping heat.


  • Soft to touch and breathable
  • Helps relieve pressure points to avoid body pains
  • Distributes body weight equally and reduces the motion transfer
  • Promotes proper body alignment
  • Compatible with adjustable beds


  • Strong and nasty chemical smell that takes longer to fade
  • Indentations start to develop where the memory foam loses its support

#3. Sleep Master SM-SC-EBT-13K-BF iCoil Euro Top Spring Mattress and BiFold Box Spring Set

Just when you needed a nice and luxurious mattress to rest your tired body, this is certainly a great pick. As a product set from Zinus, you can guarantee that it has great support which comes from its coils system. Composed of hundreds of individually encased coils, it provides a customized support system that helps conceal motion for quality sleep. At the same time, its layers of foam conceal the uncomfortable feeling of the springs underneath. Thus, its iCoil pocketed springs and foam layers work as one to provide a luxurious feel all night.


  • Weighs 57 pounds with 76 x 80 x 13 inches product dimension
  • Coil system with hundreds of independently encased coils provide customized support
  • Foam and fiber quilted cover protects the mattress from dirt and accidental spills
  • 2 layers of comfort foam and 1 high-density foam layer allows it to relieve pressure points to enjoy a conforming comfort
  • Robust BiFold box spring with traditional box spring design and heavy gauge steel frame ensures its superior mattress support
  • Folding mattress foundation allows it to compress easily for easy storage and transportation

Sleep Master iCoil 13 Inch

For those who hate the hassle of lifting too bulky packages, the packaging on this one is pretty impressive. Using a patented technology, it comes in a tightly compressed and rolled package inside the box. It doesn’t even require assembly which is a plus point. It just needs to be unfolded to form into a box spring.


  • Lightweight and easy to move
  • Easy to store in a compact size as it compresses easily
  • Certified for performance, durability, and content
  • Easy to set up even on tight spaces


  • Can be firmer for some users who needed extra cushioning for comfort
  • Can’t be flipped over to even out its wear over time

#4. Snuggle-Pedic Snug-Mat Breathable Mattress

Perfect for those who love to sink in a breathable mattress that is filled with memory foam, this mattress fits. As a Snuggle-Pedic product, it is specially designed to relieve pressure points thanks to its conforming cushions. Thus, its foam offers better cushioning especially on your hips and shoulders. It’s also great for back and stomach sleepers as it help maintain proper posture. With its perfect balance and universal comfort, it can accommodate any sleeping position.


  • Weighs 88.1 pounds with 80 x 76 x 10 inches product dimension
  • Patented airflow transfer system creates 100 times breathability by using ventilation holes for a cool feeling
  • USA Orthopedic Flex-support technology allows the memory foam to provide pressure relief
  • Pressure relieving surface consists of an extra layer for firmer support and universal comfort
  • Hypoallergenic and dust-mite resistant bamboo cover makes it ideal if you suffer from allergy reactions

Snuggle-Pedic Mattress


  • Maintains a perfect balance over time
  • Eco-friendly and easy to clean with a removable mattress cover
  • 100% made in the USA and CertiPUR-US Certified
  • Easy to move around like traditional mattresses


  • Loses its original firmness which makes it feel like a giant sponge
  • Too pricey

#5. Sleep Innovations G-MAT-95570-KG-WHT Taylor Cooling Gel Memory Foam Mattress

If you’re a fan of memory foams, this mattress would be a great investment. It can accommodate different sleeping positions so you no longer need to toss and turn every night before you sleep. If you’re a hot sleeper and tend to wake up at night sweating, its cooling technology can keep you cool. This way, you can enjoy a complete sleep every day as the mattress maintains its coolness overnight. Its support system also promotes proper body alignment regardless of your sleep position.


  • Weighs 92.6 pounds with 80 x 76 x 12 inches product dimension
  • 2 inches gel-infused memory foam with TriComfort design cradles your body gently as a cool plush top layer
  • 2 inches air channel foam serves as the breezy middle layer that allows proper air circulation
  • 8 inches support foam on the bottom layer absorbs the weight and keeps the mattress in shape
  • Quilted poly-cotton blend mattress cover adds a luxurious feel to the mattress

Sleep Innovations Taylor 12-inch


  • Provides a cooling comfort
  • Helps relieve pressure points to prevent pain along your neck, shoulders, back, and hips
  • 100% proudly made in the USA and delivered in a convenient box
  • CertiPUR-US Certified


  • Some doesn’t fully expand to its full shape and size
  • Faster to lose its support after over 2 years of regular use

#6. Classic Brands 410401-1560 Serena Pillow Top Innerspring Mattress

This mattress is ideal if you’re looking for an affordable mattress with medium firmness. It has layers of foams and innerspring layers that provide a conforming comfort and body support. Its wrapped coils reduce the motion transfer so you can sleep better undisturbed. Its coil system is also designed to be extremely durable in order to last for years of regular use. Most importantly, it is naturally hypoallergenic and resistant to mold, dust mites, and allergens.


  • Weighs 106 pounds with 80 x 76 x 10 inches product dimension
  • 2 inches soft comfort foam layer creates a more luxurious sleeping surface
  • 8 inches innerspring layer with individually wrapped 6 gauge tempered innerspring coils provide superior back support
  • Equal support distribution guarantees years of consistent support
  • Quilted soft stretch knit poly foam pillow top cover gives the mattress a comfortable feeling

Classic Brands Serena Pillow


  • Durable with medium firmness
  • Contours to your body shape no matter what is your sleep position
  • Ideal for both kids and adult bedrooms
  • Creates minimal motion transfer when moving


  • Can be too firm for other users
  • Starts to lose its original form and support in less than 2 years

#7. Sealy 52251161 Response Essentials Firm Tight Top Mattress

This mattress from Sealy is designed with traditional innerspring support and air foam top layer for cushioning. Its enhanced level of support is reinforced with an exclusive Posturepedic Technology that helps in maintaining a proper posture. It also responds to your every move without disturbing your partner’s sleep. Moreover, it has solid edge support around the mattress which provides a solid seating surface too. Thus, you don’t have to worry about falling out of bed easily due to its lack of support.


  • Weighs 50 pounds with 80 x 76 x 8.5 inches product dimension
  • Sealy Cushion air foam allows extra added softness and air flow through the mattress for a cooler surface
  • Solid Edge HD system serves as a reinforced border that provides a solid seating surface
  • Standard coil system and Posturepedic technology deliver full body support to ensure your good sleep and proper posture
  • Stretchable knit cover provides a combination of feel to touch

Sealy Response Essentials


  • Firm but comfortable
  • Works with reinforced center support
  • Cushioned by a pillow top layer
  • Draws the moisture away from your body to keep you cool and dry
  • Promotes proper body posture


  • Forms indentations after months of regular use
  • Not ideal for users who want a mattress that is too plushy

#8. Casper MT00000181 Sleep Essential Memory Foam Mattress

This Casper mattress is well-built with impressive attention to detail. Its 3 layers of foams are combined with great engineering with the user’s satisfaction level in mind. Its layers of foams with open-cell keep the surface cool so you can sleep better. Its durable cover and base layer can stand up to years of regular use. In addition, it has CertiPUR-US and Oeko-tex Certification that guarantees its safety and quality.


  • Weighs 74 pounds with 76 x 80 x 8.5 inches product dimension
  • Memory foam provides support and pressure relief points while cradling your body curves
  • Open-cell foam layer allows high airflow through the mattress for increased breathability with additional bounce and softness
  • Base foam reinforces the top layer foams and provides additional durability
  • Easy to clean zip-off mattress cover with dark upholstery and high-grade hybrid knit holds years of use

Casper Sleep Essential


  • Allows high airflow with a breathable top layer
  • Provides a universal comfort that feels “just right”
  • Creates a minimal motion transfer
  • Risk-free with 100 nights of trial
  • Made by award-winning designers


  • Not ideal for users who prefer a thicker mattress
  • There is a faint solvent smell from the foam

Buying Guide of Best King Size Mattress

Shopping may be the last thing that you prefer to do since it demands time, patience, and great decision making. However, it shouldn’t be that bad especially if you really know what you need to buy. This way, you no longer need to spend more time looking around just to find what you’re looking for. So, these are the things that you should take note when shopping the best king size mattress:

  • Type of Mattress

If you can’t sleep for straight 8 hours a day and wake up with sore body parts, inspect your mattress. It might be the root cause of your sore muscles no matter how you change your sleeping position. Who knows, your mattress might be over 10 years now and is begging to be replaced by sending you signals. In this case, consider which type of mattress suits your needs the most. These are some of the most common types of mattresses that you can consider:

  • Memory foam – this foam is ideal if you’re looking for extra comfort and support. It contours to the body shape which is perfect for stomach and side sleepers. It can also resist sagging which usually occurs in the middle of the mattress.
  • Innerspring – this is a classic mattress with coil system as its internal support. You can determine its durability and support based on its total number of coil springs and how they are distributed.
  • Latex – this mattress can be made from either natural or synthetic materials. Available with different levels of comfort and firmness, it can accommodate any sleeping position. Most importantly, it traps less heat in its thinner foam.
  • Water Bed – this mattress use water instead of coils springs or foams as its support system. Best for back sleepers, it is constructed with a rectangle water chamber that is padded with foam or fiber upholstery.
  • Gel – this is typically infused to various foam mattresses for additional support. It provides a slightly different feel compared with regular memory foams as it gets rids of body head better.
  • Pillow tops – this is a mattress that designed to provide additional cushioning with a pillow topper. Since it’s just an additional layer, you can easily put it on top of other mattresses especially on innerspring mattresses.
  • Size

Typically, king size mattresses are available in 76W x 80L inches. However, this can still vary depending on the brand’s manufacture. Thus, be sure to check the exact size to ensure that it fits your room before you confirm any purchase.

  • Depth

Next to the size, checking the mattress’ thickness can help you determine how much support it can provide. Depending on your weight and required support, you can choose from 5 to 15 inches thick mattresses. Normally, heavy users opt for thicker mattresses while lightweight users opt for mattresses with average 7 to 9 inches depth.

  • Weight

Though mattresses are generally heavy, you can still opt for a lighter one. Thus, you can lift or move it easier considering that its size is enough to make it heavier than other mattresses. Regardless, its weight should match its mattress type. In this case, you may opt for memory foam and latex mattresses if you want a lighter mattress.

  • Support

The mattress support can be determined on its ability to promote proper spinal alignment. At the same time, it should not let your body sink too much which can cause body aches/pains. Since its support capacity decreases over time, select the one that can maintain consistent support for a longer period.

  • Firmness and Comfort

Depending on its firmness, you can get the comfort you are looking for. This may also depend on your preferred sleeping position. For instance, most side and stomach sleepers prefer a softer mattress for extra cushioning. Meanwhile, some back sleepers prefer a mattress with medium firmness for better back support.

  • Motion Reduction

Since no one wants to be disturbed in sleep, you and your partner ought to get some quality sleep daily. This can be guaranteed if your mattress also has a motion reduction feature. This allows you and your partner to move without disturbing each other since the mattress minimizes the motion transfer. Without this, the mattress can make serious motion transfer like massive waves every time you or your partner moves.


Generally, a king size mattress is worth to invest in if you sleep with your partner and a child (if you have any). This is also handy if you have a pet and prefer to have him/her sleep near you. Its increased size makes it more inviting to sleep on especially if you had a long and tiring day. But whether you sleep alone or not, the thought of having more space to roll is actually satisfying. For most king size mattress, this is enough to help them fall asleep faster and longer. So, don’t hesitate to get back here and use this guide until you find the best king size mattress.


I am Linda Jones 26, editor of Matress1000. Our mission is to help people sleep better.