Best King Size Mattress – Reviews & Buyer’s Guide

Sleep quality needs to be a top priority as it defines our overall health, mood, and the way we perform physically and mentally. A big part of achieving an outstanding sleep quality is choosing the right mattress.

Having a cheap, unappropriated mattress according to our needs may cause us serious troubles as back pain and chronic fatigue. These problems are easy to acquire for those who don’t take preventive measures. One of our best resources to keep these problems at bay will always be a reliable mattress.

While most people overlook the quality and features of their mattresses, you should not make this dangerous mistake. Maybe you are now realizing that your current mattress does not meet the standards and it’s now causing you trouble. Or maybe, your good old mattress is asking for a change already.

Regardless the situation, choosing the best king size mattress in 2017 is the right thing to do in order to upgrade and enhance the way you rest. If sleep quality and proper rest aren’t already big priorities in your life, they should.

In the following lines, we will address some of the most important aspects when looking for a new king size mattress after we review a few of the very best alternatives, now available in the market.

Best King Size Mattress with Reviews

 NamePriceWarranty Check Price
Casper Sleep Mattress$$$$10 Year Warranty
100 Night Sleep Trial
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Tuft & Needle King Mattress$$$10 Year warranty
100 Night Sleep Trial
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Zinus Sleep Master Ultra$$$10 Year Limited WarrantyCheck Price

Best King Size Mattress Overall: Casper Sleep Mattress

Best King Size Mattress Overall: Casper Sleep Mattress Review image source:

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If you are all-in on the quest of choosing the very best king size mattress to upgrade your bedroom, the Casper Sleep Mattress should be your top priority. This premium mattress features a cutting-edge 4-layer foam construction that offers us outstanding comfort and long hours of proper rest.

With a 100-night trial, the customers have the valuable opportunity to experience how the Casper Sleep Mattress can improve their lives. From day one, this king size mattress works to contour to your body, bringing the very best ergonomic benefits. This is possible thanks to the smart use of memory foam along with other premium materials included in the multilayer construction.

Casper is proud of the many awards they have received as a company and thanks to their premium mattresses. The 10-year warranty is a solid proof of how confident they are.

The Casper Sleep Mattress, built by a leading-edge startup, focused on the data that dozens of tests generated. Thanks to the gathered information, they created a smart, all-in-one mattress with the right support and bounce, providing an outstanding experience to the happy owners.

Best King Size Mattress for Back Pain:Tuft & Needle King Mattress

Tuft and Needle Mattress review image source:

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For those who suffer from back pain, there is hope and its name is the Tuft & Needle King Mattress. People with back pain often blame their current mattresses but do nothing about it. If you want to make a big difference for your health and feeling great once again, this is the proper option to take.

Tuft & Needle uses a patented Adaptive Foam system that goes beyond what popular technologies in the mattress’ industry can offer. According to the company, the Adaptive Foam is way more efficient than memory foam in terms of coolness, support, bounce, and proper adaptability to the body. On this king size mattress, all the curves of our body are treated right.

The Tuft & Needle King Mattress’ development, something that many happy customers endorse, was led by industry-leading engineers, real experts in sleep technology. Gel and graphite are used to keep the mattress cold, no matter the circumstances.

Most customers agree that the Tuft & Needle King Mattress isn’t only great to alleviate back pain but also for shoulder and neck pain. The comfort provided goes beyond the industry standards and aims directly to offer a therapeutic experience for the users in pain and discomfort.

  Best Cheap King Size Mattress: Zinus Sleep Master Ultra

Best Cheap King Size Mattress: Zinus Sleep Master Ultra Image Source:

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Budget-friendly alternatives don’t have to be disappointing. While the alternatives above represent the very best in their segments, you can also get a satisfying experience for less. In this category, we chose the Zinus Sleep Master Ultra Comfort Memory Foam 8 Inch Mattress. Don’t let its long, flamboyant name intimidate you: this is a quality product that remains significantly more accessible than the options we reviewed before.

You can get the Zinus Sleep Master Ultra Comfort Memory Foam 8 Inch Mattress for half of the price and still get many of the valuable perks. This mattress is based on memory and support foam, distributed in several layers that leverage the comfort and therapeutic benefits on our backs, shoulders, and necks.

In fact, Zinus uses its own development in memory foam application, called BioFoam. While it may deliver the same benefits in terms of comfort and proper rest, BioFoam differences itself from the competition by using natural-based oil, replacing petroleum use. This is clearly a benefit for those who worry about the environment.

The Zinus Sleep Master Ultra Comfort Memory Foam 8 Inch Mattress contours perfectly to our bodies’ curves, granting a healthy position in our sleep. But the convenience it provides goes beyond its use: the mattress is shipped compressed into a practical box, eliminating all hassle in terms of transportation.

How we did our research in order to find best king size mattress

In order to create this piece of informative content, we researched thoroughly the customer reviews that are available online in terms of king size mattresses. To this, we added our own expertise in the sector, allowing us to develop sounding advice to all our readers.

King Size Mattress Buying Guide

So far, you have received our recommendations in three different segments of king size mattresses. However, in order to make an informed purchase, you need to know what elements in a mattress truly deserve your full attention.

Before we go, we’ll address the factors that will define your upcoming purchase. Your mattress is the most important piece of furniture in your bedroom, so invest the needed time before taking a decision.

When looking for a king size mattress, pay attention to the following factors:

  • Comfort

If you are shopping online, read customer reviews in order to determine if the product in question can deliver a comfortable experience, regardless of the many cutting-edge features it may offer.

  • Healthy Support

There are mattresses that look and feel amazing, yet they cause us terrible pain shortly after. Enjoying proper, healthy support that aligns our bodies is paramount to have a positive experience.

  • Temperature Features

Bad materials on a mattress will cause high temperatures during your most important hours of resting. That’s why you need to give a second thought to the materials used and ventilation-oriented features.

  • Motion Transfer

If you are looking for a king size mattress, you are probably going to share it with someone else. If that is the case, motion transfer is a big thing. You don’t want to interrupt your partner’ rest when switching resting positions or moving around.

King Size Mattress Comparison Chart

PictureBest King Size Mattress Overall: Casper Sleep Mattress ReviewTuft and Needle Mattress review
NameCasper Sleep Mattress, KingTuft & Needle Mattress, King MattressZinus Sleep Master Ultima Comfort Memory Foam 8 Inch Mattress, King
Available SizesN/AN/A8 , 10 , 12 Inches
Manufacturer Casper SleepTuft & NeedleZinus, Inc
Item Weight100 pounds82 pounds68.8 pounds
Product Dimensions80 x 76 x 10 inches76 x 80 x 10 inches80 x 76 x 8 inches
MaterialFoamAdaptive FoamBioFoam
CertiPUR-US CertifiedYesYesYes

The Bottom Line

Choosing the right king size mattress doesn’t have to be an overwhelming experience. In this article, you have enough information to make a smart decision and change the way to sleep at night. Enhancing your sleep will bring you both short- and long-term benefits that will improve your life.

Sleeping isn’t about how many hours you spend in bed but how you spend that time. The right mattress plays a vital role here. A bad decision here can lead you to suffer pain, afflictions, and a poor performance, both physically and mentally.

If one of the segments above fits your current situation, we encourage you to follow our advice and get the very best king size mattress possible. This is an investment you will appreciate your entire life.



Abby Larson

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