Best King Size Mattress Review 2018- Your Actionable Guide

Your choice of mattress goes a long way toward determining your sleep quality.

Studies have shown that a good sleep of at least 8 hours every day, a healthy diet, and an active lifestyle play a big role in healthy living. 


To achieve a satisfying sleep, you need to have a very comfortable mattress that fits you and for some people, a king-size mattress can help a lot.

Different models of king mattresses are being produced every year by different manufacturers. This expands the market, broadening our options and yet making our choices and picks quite difficult and confusing. Well, don't be worried, this guide was written to help you.

We’ve come up with a list of the top 5 king size mattresses available for you.

Best King Size Mattresses In 2018

1. Zinus 12-Inch Memory Foam Mattress- Best Overall

Zinus memory foam.jpg

2. Snuggle-Pedic Memory Foam- Custom Firmness

Snuggle Pedic Mattress.jpg

3. Tuft and Needle King Mattress- Best in Design

Tuft & Needle Mattress.jpg

4. Dynasty Cool Breeze Memory Foam- Most Comfortable

Dynasty Mattress Cool Breeze.jpg

5. Signature Sleep 12-inch Mattress- Most Durable & Budget Friendly

Signature Sleep Memory Foam Mattress.jpg

Now, let’s take a look at a detailed review of these mattresses. We will be discussing the features, pros, and cons of each mattress.

Zinus memory foam.jpg

Zinus memory foam with dimensions is US-Certified for durability, performance, and is infused with green tea and castor natural seed oil to naturally retard odor and bacteria.

Comfort and Firmness

The Zinus memory foam comes with a 1-inch microfiber that’s quilted directly to the soft knitted jacquard cover, a 1-inch Viscolatex responsive foam, 2-inch memory foam, 3-inch comfort foam and a 5-inch high-density base support foam, which is comfortable and really firm with a good edge support.

Based on some reviews, it is a plush and soft mattress. A particularly reviewer describes it as a pain relief, as it cured her boyfriend’s back pain and her sleepless night.


Zinus memory foam is US Certified, which means that high quality and non-toxic materials were used in the production of this mattress.

Furthermore, the 12-Inch Memory Foam Mattress comes with a 10-year limited warranty. And for optimum performance, it is highly recommended that you allow at least 72 hours after unpacking for the mattress to return to its proper shape.


  • Firm mattress, ultra plush comfort
  • Green tea and castor seed oil infused
  • 10-year warranty


  • A little too firm for some people

Snuggle Pedic Mattress.jpg

This mattress is a little pricey but one of the best king size mattress you can invest in.

Snuggle-pedic mattress is made to offer patented airflow transfer by giving the much-needed breathability and allows your body heat to dissipate. That way, you enjoy a cooler sleep.

It, therefore, prevents the mattress from breaking down much quicker from fabric and foam's worst enemy...sweat!

Comfort and Firmness

The mattress is made of 2 layers which allows it to give pressure relieving and conforming cushion for the shoulders and hips, while the firmer channeled base layer provides the spinal support needed for back and stomach sleepers providing a universal comfort for all sleeping positions.

One more thing, thanks to the comfort and support the Snuggle pedic mattress provides, even if you are on the heavier side, you don’t need to worry about any form of body ache and all sort as it provides optimal orthopedic support for your spine.

To add to the comfort, the mattress comes with an extra thick and luxurious Kool-Flow Bamboo Micro-Vented cover and is classified as a plush mattress.


Snuggle pedic king size mattress is definitely a great deal as it comes with a 4 month (120 days) sleep trial of no-hassle refund guaranteed trial period. More so, it comes with free customization to alter the comfort or support if need be.

Also, everything from the fabric, cover, and fire resistant chemical free socking are all made in the USA and are CertiPUR-US certified. It also comes with 20 years warranty.


  • Airflow transfer system
  • Free customization of the firmness level
  • 4 months trial
  • 20 years warranty


  • A little too plush for some (but note that you can get free customization)

Tuft & Needle Mattress.jpg

Tuft and Needle king mattress is one of the new king size products in the market and it is a reasonably pricey king size mattress. It has got one of the best qualities when it comes to king size mattresses.

Comfort and Firmness

Tuft and Needle mattress is made with freshly poured Tuft & Needle adaptive foam that offers provides a bouncy yet supportive feel perfect for all sleeping positions.

The adaptive foam is just the right mix of not too soft, and not too hard, offering great pressure relief and adapts easily to each individual’s body, which makes it ideal for both you and your sleeping partner.

Also, Tuft and Needle mattress is gel and graphite infused which makes it stays cool and assures comfort all-year round even during hot summer nights.


Although, this mattress is only a few years old in the market and cannot be ascertained just yet if it will pass the test of time, but from customers reviews, it looks promising.

It is Greenguard certified, CertiPUR-US certified and Oeko-Tex Certified, which furthermore guarantee the toughness and impressive quality of this mattress. 

It comes with a 100-night sleep trial plus an honest 10-year warranty.


  • Well designed
  • It is cool and comfortable
  • 100-night sleep trial
  • Honest 10 years warranty


  • Quite new in the market and hasn’t passed the test of time yet.

Dynasty Mattress Cool Breeze.jpg

 This cool breeze mattress is an extra thick king-sized mattress is possibly one of the most comfortable in the market with the cover serving as a fire barrier.

 Comfort and Firmness

This high quality and 4 layered foam is 12 inches thick and has a medium firm feel. The extremely comfortable layers of this king size mattress have 3-inch gel foam, dual 2-inch cool airflow layer and 5-inch high-density flow for support which allows you enjoy all year comfort.

The infused gel beads in the premium memory foam provide the ultimate solution, combining comfort, support pressure relief and improved airflow for a cooler night's sleep and plenty of other great features such as breathability and pressure relief.


The 5-inch base foam of this Dynasty 12 inch king size mattress provides extra support and durability to this mattress. And according to some reviews of this mattress, it is advised to use a box foundation (a foundation constructed of wood with no springs) or a platform bed with no slats for maximum support and durability.

Also, this king mattress comes with a fire barrier cover combined with brown suede for a more luxurious look and it also has a zipper to make the cover washable.

The DynastyMattress 12-Inch cool breeze memory foam is made with CertiPUR-US certified foam.


  • Extra thick mattress
  • Medium soft mattress
  • Gel beads on memory foam for added cool temperature
  • Air Flow layer for breathability
  • 30 year limited warranty


  • The mattress is little too plush for some users.

Signature Sleep Memory Foam Mattress.jpg

The Signature sleep mattress is relatively affordable and takes about 72 hours or less to decompress upon purchase. It is one to consider if you desire to use it for long as the medium firmness mattress is considerably thick and comfortable.

Comfort and Firmness

The Signature Sleep Memoir 12 inch mattress is made with a 4 inch top layer of comfortable Memoir Foam, followed by 8 inches of high-density foam which allows for the mattress to mold to the body's natural shape for a comfortable night's sleep.

The medium firm comfortable, eco-friendly mattress help minimize pressure on the body, distribute weight evenly and provide balanced support no matter how much you toss and turn, relieving pressure on your shoulders, hips, and feet while perfectly contouring your body.

This king size mattress also has special isolating qualities which means you won’t be woken up by your partner’s or anyone else’s movement.


The Signature Sleep 12 inch mattress is made with CertiPUR-US certified foam and this Memory Foam mattress includes a soft cover made of breathable knit fabric.


  • Relatively cheaper than similar mattresses
  • Medium firmness
  • Provides balanced support
  • Takes shape of your body and isolates other movements


  • According to some reviewers, it’s a little too firm and hard
  • It sometimes takes longer than 72 hours to decompress, according to some reviews.

Now, that you know what king size mattress you should buy, how about learning the best way to care for your king mattress?

How To Care For Your King Mattress

1. Make sure your mattress is properly supported

It is important to make sure your mattress has the right kind of support (a sturdy, high-quality bed frame) to help prevent early wear and tear and also preserve the fabrics/materials of the mattress.

Check with the manufacturer or look at the warranty policy for recommendations. Box springs are generally used only with spring mattresses, while memory foam and other specialty mattresses usually require firm, solid support.

So, it is important to make sure you check your mattress support every year to ensure that there are no broken slats or springs that can affect your mattress.

2. Rotate Your Mattress Regularly

Unless your user manual/mattress care instructions state otherwise, it is advisable you rotate your mattress from one end to another from time to time and flip it over, if applicable.

You can do a 180-degree rotation from head to foot, every six months to prevent easy depression and softening of the mattress.

3. Use A Mattress Protector

A good quality, waterproof mattress protector protects the mattress against spills, accidents and the likes. It also minimizes the penetration of dust, dirt, and debris.

Also, a mattress protector protects the materials inside your bed from damage, keeps skin oils and sweat off the bed and reduces the build-up of allergens like mold and dust mites.

4. Do Not Sit On The Edge Of The Mattress

Sitting on the edge of your mattress every now and then can make your mattress wear out easily, even if you have mattress protector on. This is because the more the edges begin to wear, the weaker your mattress gets and it soon passes on to the centre of the mattress. So, while this may be a little difficult to achieve at first, you may have to consciously remind yourself to stay away from the edge of your mattress.

5. Air Your Mattress Out

It's importantly to let air go through your mattress every now and then. This gives room for body moisture to evaporate from your mattress and also prevents any ill-effects of dampness on your mattress, making it last longer and better.

Now, Your Turn

I’m sure by now you know some of the best king size mattresses you can purchase. I’m sure you can’t wait to go make your purchase.

Let us know if you find this review helpful and kindly let us know what else you’d like us to review next by leaving a comment on this post.

Also, if you have tried some other king mattresses you find really good and of high quality, you can equally share your experience with us by leaving your thoughts and comments on this post.

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