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The key to feeling your best every day is to get a good night’s sleep. The mattress on your bed plays a vital role in providing you with just the right amount of comfort so you can sleep well. Some mattresses are very firm, while others are extremely soft. What makes a mattress comfortable all comes down to your own personal preference and how you like to sleep. When you take personal preference into account and combine it with the extensive number of mattresses available to buy, it can be very difficult to select one. However, to help you find your fit, we have reviewed and listed the top five king mattresses, plus included a buyer’s guide to finding the right mattress so you can be one step closer to getting a good night’s sleep.

Here Are The Best King Mattresses

TUFT & NEEDLE King Mattress

– Best Overall


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For those who truly want to test out a mattress before they buy, customers get a 100-night sleep trial with this mattress. It will provide you with the best comfort and support, has an affordable price tag, and has a hassle-free 10-year warranty.

This mattress allows you to get perfect pressure relief but does not cause you to sink too deep into the mattress. The support layer will keep your body aligned while you rest. More importantly, the high-density foam is very durable, and it will hold up over time.

Key Features

  • The breathable and open-cell foam prevents you from overheating at night
  • Compatible with most box springs, foundations, and frames
  • Easy to set up
  • Comes with a breathable knit cover to protect the mattress

Zinus King Mattress

– Runner Up


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This mattress has a unique green tea and charcoal-infused memory foam to provide users with sleep-enhancing qualities of natural ingredients. The rich green tea will keep your mattress fresh, and the active charcoal will block out all moisture to prevent unpleasant smells.

Furthermore, the precise layered CertiPUR-US certified foam enables you to sink into this mattress for a supportive feeling to align your spine and act as a cushion for your aching joints.


  • The middle layer has open-air pockets that enable you to sink comfortably into this mattress
  • Provides extra comfort to your shoulders, knees, and hips
  • Easy to unbox and set up
  • Comes with a 10-year worry-free warranty

Novilla King Mattress

– Honorable Mention


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The Novilla King Size Mattress features twelve inches of memory foam to help you sleep well. This mattress has excellent breathability and is very soft to the touch. It also has three inches of gel memory foam that will prevent you from getting too hot while you sleep.

Better yet, this mattress comes with a 100-day trial period, so you can make sure you like it before you fully commit. However, you are sure to love this ultra-comfortable memory foam mattress.

Key Features

  • Has CertiPUR-certified foam, free of harmful chemicals
  • Provide maximum cooling and breathability for comfortable sleeping
  • Can be set up in just four easy steps and fits nicely on a wide range of bed frame styles
  • Has a zipper design to quickly remove the cover, which is machine washable

Jingxun King Mattress

– Also Consider


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The Jingxun Memory Foam Mattress has a durable and comfortable knitted washable cover that is hypoallergenic and very breathable. It also has a certified gel memory foam layer to provide you with extra support while sleeping.

The HD support base foam acts as the support layer and provides a breathable foundation. More importantly, it comes in various levels of thickness, so you can find the optimal firmness for you.

Key Features

  • The setup process is easy: unpack, unroll, and sleep in
  • It will fit on all frames, such as a box spring, an adjustable bed frame, a slatted base, or even the floor
  • The open-cell foam keeps you cool on warm nights
  • It offers zoned support and will fit the curves of your body

Sweetnight King Mattress


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This king-size mattress is made with CertiPUR-US certified foam and does not contain any harmful substances such as mercury, formaldehyde, or other heavy metals. The individual wrapped innerspring moves independently to avoid the motion transfer between partners for undisturbed sleep.

The Sweetnight Memory Foam mattress is very resistant to sagging. Moreover, it has a cover of rayon cotton for unsurpassed softness and body heat dissipation.

Key Features

  • Cotton cover promotes airflow, regulates heat, and lets moisture evaporate naturally
  • The mattress is compressed, rolled, and shipped in a convenient box, making it very easy to set up!
  • Gel-infused memory foam adjusts as per your body weight and temperature
  • Warped-pocketed steel coils for maximum support and alignment

Best King Mattresses Buying Guide

A mattress is your best companion for a comfortable and peaceful night of sleep. Many different factors play into how comfortable (or uncomfortable) your bed is, including the weight of your body, mattress firmness, type of mattress, materials of the mattress, and much more. It is important to keep these factors in mind when making a selection

It is crucial to ensure that your mattress provides excellent support and dissipates heat properly while you are sleeping. You can use the internet to collect this type of valuable information or visit an in-person store to get a feel for the different options available from various manufacturers. To pick up the right mattress, follow the detailed buying guide below:

What Are the Different Types of King Mattresses Available?

Let’s kick start our discussion with the different types of mattresses that you can buy:


This type is made with high-quality polyfoam. The polyfoam helps in aligning the spine while sleeping and alleviates pressure points. It also provides at least one additional layer of either polyfoam or memory foam to support the core.

The foam is thick enough to support your body weight but is still soft enough to be comfortable. Low-density foams will degrade quickly, but high and medium-density foam has a good life span. The indentation load deflection (ILD) ranges from 8 to 21. The average life span for this type of mattress is seven years.


Some mattresses are made with latex, a substance extracted from the sap of rubber trees. Note that latex can be synthetic or natural. The support core can be made from either latex or high-density polyfoam. The average life span of latex mattresses is around 8.5 years.


The majority of innerspring mattresses have one or two layers of polyfoam as a part of their comfort system. Usually, the support core has an evenly spaced steel coil and a base polyfoam layer.

You will see different coils in this type of mattress: Bonnel, offset, pocketed, and continuous wire coils. It is important to keep the coil count in mind because this will affect the comfort and longevity of the bed. An innerspring mattress with a coil count of 600 to 1000 coils usually provides high satisfaction. The average life span for this mattress is 5.5 years.


The majority of the airbeds have very thin foam comfort layers or no comfort layer at all. The support core has at least two individual air chambers that can be inflated or deflated to adjust the mattress’s firmness and support. Most airbeds are operated via remote control, but some models require manual adjustment. The average life span for this mattress is eight years.


As per the definition, a true hybrid mattress is made with at least two inches of memory foam and latex as a part of its comfort system, along with a pocketed coil support core.

This mattress has a life span of six years. It offers closer conforming to your body and more pressure relief than an innerspring mattress. Moreover, it also provides you with solid edge support.

Essential Factors To Consider When Buying a King Mattress

When you select a mattress, you have to keep a few essential things in mind. One thing to consider is the type of sleeper you are. Other factors to consider are:

Sleeping position and temperature

Every person has their favorite sleeping position. Different positions will have different support requirements. The selection of a proper mattress will depend on whether you sleep on your side, back, stomach, or a combination of these positions.

You also have to keep your body temperature in mind. Some people get really hot while they sleep, while others get really cold. A smooth and conforming mattress will enable less airflow around your body and trap more heat than firmer options. For better temperature regulation, choose an innerspring or hybrid mattress.


The majority of mattresses are available in six standard sizes: Twin, Twin XL, Full/Double, Queen, King, and California King. In some models, you might find sizes like Full XL or Short Queen. Moreover, they might be available in split Queen, King, or California king sizes that include two individual mattresses that can be separated or pushed together.


The mattress firmness is linked to the sleeping position and sleeper weight. There are different firmness levels with different ratings. For instance, an extra soft mattress has a scale rating of 1, soft has a rating of 2 to 3, medium soft has a rating of 4, and the firm has a rating of 7 to 8. Each firmness level features different benefits and drawbacks. For instance, in a mattress with a medium-firm level with a rating of 6, the surface will sink very little and will conform to your body to a moderate extent.


Most mattresses measure at least 10 inches in height, but mattress thickness can vary from 5 inches to more than 15 inches. The body weight of the user might affect the preferred mattress thickness. Individuals who are lighter may prefer shorter beds, and heavier people feel more comfortable on thicker beds.

What Are Some Significant Factors in the Mattress Buying Process?

Below are some of the significant considerations you have to keep in mind when buying mattresses, be it king-size or any other:

Delivery and shipping

Make sure that the mattress you are going to buy can be shipped to your desired location. Know about the exact time of delivery from the manufacturers. Also, inquire about in-home assembly offers. Some manufacturers do it for free, and some might charge upwards of $100. Moreover, also ask if they can remove your old mattress for you.

Returns and sleep trials

Most manufacturers offer sleep trials to let customers test the mattress for a certain period to help them make better decisions. You should always ask the manufacturer if they offer a trial period before you make a full commitment to the mattress. An average sleep trial will last for 90 days. Moreover, do inquire about the exchange policy as well. Some manufacturers might charge you when you return the mattress.


Most mattresses have a warranty of 10 years. It is essential to inquire about the length of time, things covered under the contract, replacement costs, repair of a defective mattress, and limited warranty!

How Much Do King-size Mattresses Usually Cost?

The price tags for different types of king-size mattresses are as follows:

  • Memory foam: It will cost you nearly $1,044, on average.
  • Innerspring: The price will be around $1,037, on average.
  • Latex: The average cost is $1970
  • Airbed: The average price tag for this is $2,282.
  • Hybrid: The price is $2,076 on average.

King Mattresses FAQ

Q: What should I look for in a king-size mattress?

A: You have to look at many important things when buying a king or any other size mattress. For instance, accessibility is essential! King size mattress will be perfect for a room with a minimum area of 12 feet by 9 feet, 10 inches. If you have a small room, a king-size mattress will cover most of the space. As a rule of thumb, it is best to leave 30 inches of space around your bed for easy movement.

Q: Why do king or other types of mattresses sag?

A: Sagging occurs with typical wear and tear that happens to your mattress over time. Over time, the foam becomes soft, and this leads to sagging and uneven support.

Q: Do two twin mattresses make a king mattress?

A: Twin XLs are long, similar to king and queen mattresses, but only half as wide. When you push two twin XL mattresses next to each other, you will have the same size as a king bed, 76 by 80 inches.

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Founded in 1973, Old House Journal is the original authority when it comes to old-house restoration, traditional house styles, period kitchens, bath & kitchen restoration, DIY projects, gardens & landscaping, and more-- from Colonial and Victorian through Arts & Crafts and Mid-century Modern homes.

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