Best King Size Mattresses – Reviews & Guide 2020


King size mattress as the name implies is one of the fast demanding mattresses in the market today. This is because this mattress gives you maximum comfort and relaxation as it comes in a large size and can even take a queen on it and there would be enough space for the couple. Meanwhile, it is an expensive mattress suitable for people in search of the luxury mattress.

But since there are hundred thousands of it in the market, you would surely get on that suit your budget. Getting the best king size mattress might be challenging. That is why we have compiled a list of the best seven king mattresses you would love to get alongside with a detailed buying guide.

Top 7 King Size Mattresses

Zinus Memory Foam 12 Inch Green Tea Mattress

There is no controversy that this mattress is the best king mattress you would love to get. Those who have gotten this model has proved this right has Zinus Green Teas form has been given a lot of rating and has the highest number of reviews. When it comes to durability, it’s assured that this product would last for a long period has it comes with a 10-year warranty from the company. Since it is CertiPUR-US certified, this assures you more of its reliability.

Also, it is infused with green tea, charcoal alongside natural plant oil which gives the mattress a nice smell always thereby getting rid of odors. They also help to keep the foam from petroleum-based chemicals. Its 12-inch size makes an ideal mattress for beautiful couples. The 3 inches memory foam and 2 inches comfort foam makes it a convenient and comfortable mattress for you.

Likewise, the 3.5 inches airflow high-density foam and 3.5 inches airflow high-density base support foam makes the mattress stable and at the same provides it with ultra-plush support. It is important to know that this product you should unused for 72 hours after unpacking it for it to return to its normal shape. It comes at an affordable price making it possible for people on a budget to purchase.

Signature Sleep Memoir 12 Inch(2) Memory Foam Mattress

Signature sleep memoir mattress comes at a relatively low price compared to other mattresses. Although it is a new mattress in the market today, its performances have made it everyone choice.

More so, this product has been tested by the CertiPUR-US, and it has been certified for its high performances and comfort. Also, you tend to enjoy it for a long period has it comes with a 10-warranty from the company directly. Another unique thing about this sleep mattress is that you can sleep with it for 100 nights and return it if you found any fault with it.

This model does not only offers comfortable and convenient sleep alone, but it has also helped to spread your body weight equally, relieve the pressure on your shoulder, hips, and shoulder while having a good sleep. Since it has the size of 12 inches, it would take two people on it comfortably without causing overcrowded or body hitting each other.

It is made with a 4” top layer of comfortable memoir foam alongside with 8 inches of high-density foam which provide extra comfort and also making your long night a memorable one.

Tuft & Needle King Mattress

For users in search of a luxury king size mattress, then this product is the best option. Tuft & Needle mattress is a versatile product that can be placed either on the floor, adjustable frames, slatted frames or box spring. Anywhere you place, be sure that you would enjoy 100% of comfort. You would never doubt its performances has it has been tested and certified by the Greenguard, CertiPUR-US, and Oeko-Tex.

More importantly, it is a product that would last for a long period as it has been warranted for 10 years from the manufacturer. It is made from a Tuft &N3dle Adaptive Form which does not only help you to enjoy a bouncy night sleep but also offers perfect support for any sleeping position. This is also accompanied by a mix of graphite and gel beads which help you to control the temperature while sleeping.

It has a 3-inch layer alongside with 7-inches of support foam which gives you maximum relief when on it. Besides, your safety is guaranteed with this mattress as it is free of haul substances such as formaldehyde, heavy metals, carcinogens, and other dangerous elements.

Sleep Master iCoil 13 Inch Euro Top Spring Mattress

Ready to spend a large amount of money on a mattress that gives a large amount of comfort and makes you lost in the dreamland while sleeping? Definitely, this product is what you are looking for. Sleep Master iCoil Mattress offers 2-inch. Comes with a layer of comfort form with the addition of an extra layer of high-density support foam which does not only support your body while on the mattress but also helps you to maintain a body firmness on the bed.

On top of that: you would at the same time enjoy the pillow top area of the mattress which offers soft and extra-plush feeling to all users. Its 13-inch size makes a bad in which two partners can keep malice with each other and move around without touching themselves. It comes with a hundred independent iCoils which gives maximum support to the users and at the same time ensuring motion separation for a convenient and comfortable night rest.

Without a doubt, this model would last for a long period as it is CertiPUR-US certified. Also, another durability assurance comes from the company which gives a 10-year warranty on this product. After purchasing this mattress, it is advisable to leave it for up to 72 hours for it to expand there given it total best.


Of all king size mattresses, Snuggle-Pedic comes with the highest price, and it is the best option for those people in search of a luxury mattress. Apart from this, it offers the longest warranty of 20 years thereby making it a product with long term durability. Also, the company offers 4-months sleep trial and can be returned of any fault is found with it. From these various qualities, it is safe to say that this product is one of the most reliable king size mattresses in the market today.

That is not all on this unique model. It features a patented airflow transfer system which helps to minimize the body heat up and at the same time creating an atmosphere for better breathing. Snuggle-Pedic does not only offer a comfortable sleep, but it also helps to relieve pressure on the body, shoulders, and hips alongside providing adequate spinal support for back and stomach sleepers.

The Flex-Support technology that comes with this product gives a maximum amount of orthopedic support and offer a high level of comfort to all users. You can put your mind at rest with this mattress as no toxic material is made with it and it has been tested and certified by CertiPUR-US.

Dynasty Mattress

When talking of a king size mattress that proves its royalty with a large size and thickness, nobody competes with Dynasty mattress on this. This product comes at a large size of 15.5 inches making it a suitable bed for two or more people with adequate comfort.

Nevertheless, it is a mattress with a lot of layers for a comfortable sleep. It features a 1.5-inch JD cool gel memory foam at the upper layer then followed by a 2-inch HD cool gel memory form and another 2-inch HD cool gel memory foam after it then a 2-inch HD memory form and at the lower level a 2-inch cool airflow.

These 6-layers construction does not only provide your body with the maximum support mended, but they also help you to breathe well and at the same time maintain a conducive temperature while sleeping. It comes with a 30-years limited warranty from the company making it one of king size mattress with long term durability. Since it is CertiPUR-US certified, no worries about its performance of durability have it has been tested and trusted by this organization. Lastly, it comes with a fire barrier cover with zipper.

Sertapedic Eurotop 100 Innerspring Mattress

If you are in search of a hybrid king size mattress that combines memory foam layers and a custom support flex 704 coil system, then there is no doubt that this product is the best option for you. Since it is coming with two mattresses, you would, therefore, be enjoying to benefits in just a single mattress.

This combination does not undermine the uniqueness of this bed as it tends to last for a long period. Similarly, this product comes with a 10-year warranty from the company. You can also rest assured of its reliability and great performances as it has been tested and certified by the CertiPUR-US.

It features a 1-inch Serta pilowsoft foam top upholstery at the upper layer and a 2.75-inch Serta comfort XD foam which provides the body with adequate support needed while sleeping on this mattress. You should not be worried about the price of this mattress as it is not expensive but makes your night a sweet one with comfort and relief. Serta mattress also ensures your adequate safety on it.

King Size Mattresses – Buying Guide

Having gotten the knowledge of the best king size mattress you should go for, there are some guidelines and factors you must put into consideration before going for any of these. It is essential to look for some features in this mattress before going for any. Here are some vital factors to consider


This is a crucial factor to put into full consideration before going for the best king size mattress. This is because a durable mattress does not only gives you the maximum trust you needed but also prevent you from impromptu budgeting of another mattress when it gets fault very early.

So when you are going for a king size mattress, you look for a product with at least 5 to 7 years warranty. Although some come in 10, 20 or even 30 years warranty, this does not mean they would last up to that.

Layers and Comfort

The main reason why every home opts for a bed at one time or the other is to have a place to rest and all the stress they had encounter all day long. So if you are going for a king size mattress, you would surely be expecting maximum comfort from it.

There flow, you should look for a mattress with sufficient airflow and also some cooling gel materials in the mattress. Meanwhile, layers in a mattress also help to relieve pressures and helps to maintain normal breathing level. So, try and look for a mattress with at least two layers.