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King (76" x 80")

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A King Size Mattress

With the perfect feel and advanced technology, the Zoma King is an unmatched sleep experience.

  • uncrate

    "The mattress athletes have always dreamed of"

  • gear patrol

    "The perfect blend of comfort, pressure-relief, responsiveness, and support"

  • cool material

    "You owe it to yourself to try Zoma today"

Restorative, restful sleep.

With Triangulex™ and Reactiv™ technology, a Zoma Mattress cools and supports a sleeper throughout the night. Triangle-shaped cutouts add softness and breathability while the middle remains firm to keep the torso lifted. The latex-like Reactiv™ protects the support core and prevents the sleeper from sinking too deeply into the mattress.

Don’t compromise.

We engineered the Zoma v not only to offer a sleeper comfort but to re-energize and restore their bodies. Triangulex™ features a balance of contouring and support, while Reactiv™ adds responsiveness and a bit of bounce to the bed. Our Support+ core provides the bed extra durability by deterring sagging.

Who is a King size mattress good for?

  • Plenty of Space

    A standard king size mattress provides 6,080 square inches of room—sleepers will find it offers the most personal space.

  • Couples and families

    A king size mattress gives each partner 38 inches of wiggle room, and split variations allow easy customization for different firmness levels.

  • Upgrade a master bedroom

    Larger master bedrooms can accommodate a king size mattress, leaving you with plenty of room to both relax and move about.

How much to spend on a king size mattress.

Mattress companies determine the prices of their mattresses based upon the materials used, the attached warranty and sleep trial, and any additional sleep technologies such as gel memory foam or extra support to prevent back pain.

The best mattress for you depends on your sleep position and any health conditions. A stomach sleeper needs a mattress with a firm feel to maintain neutral spine alignment. A sleeper with severe allergies needs a bed that prevents allergens from accumulating, such as a high-density memory foam mattress.

You might worry you need to spend thousands of dollars on a king size mattress, but that’s not true. Mattresses with a price tag greater than $3000 are often marked up for the appearance of luxury, rather than for any special features they offer.

Added features, however, can increase a mattress’s costs, as these features take more effort and material to make. Common cost-increasing features include cooling measures, reinforced edges, quilted plush pillow tops, thicker comfort layers, added layers, and organic materials.

A little research can give you an idea of the average cost of a mattress so you’re not overpaying. Remember, high prices are not a guarantee of luxury. If you’re thinking about a more expensive mattress, examine its features and look up similar mattresses to compare prices.

Beware of too-cheap beds, as well; if it seems too good to be true, it probably is. An inexpensive king size mattress might be more of a money drain than it is a money saver, as you have to replace it sooner than you expected. Many cheap beds contain low-quality foams that will break down within a few short years.

Still unsure if a mattress is a good deal? Try reading through the warranty to see how long it lasts and what it covers. The industry standard for a mattress warranty is 10 years, so any warranty shorter than that may signal a lower quality mattress.

How big is a king size mattress?

A king size mattress is 80 inches long and 76 inches wide.

  • Twin

    38" x 75"

  • Twin XL

    38" x 80"

  • Full

    54" x 75"

  • Queen

    60" x 80"

  • King

    76" x 80"

  • California King

    72" x 84"

  • Split King

    38" x 80" x 2

Which size mattress is best for me?

  • Kid’s room, studio apartments

  • College dorm, studio apartments

  • Kid’s room, studio apartments

  • Master bedrooms, guest rooms

  • Extra large master bedrooms

  • Extra large master bedrooms

  • Split King

    Master bedrooms, adjustable beds

How does a Zoma king size mattress compare in price?

  • Amerisleep
  • Purple
    The Purple
  • Serta®
  • Sealy®

Sleep on it.

Every Zoma king size mattress comes with a risk-free, 100-night sleep trial. If the mattress isn’t right for you, donate it to a local charity and we’ll issue a full refund.

See why people 
love the Zoma Mattress.

James B.

My wife and I have been sleeping on our Zoma king mattress for nearly two months now and we are very happy with our purchase. It is very comfortable and feels cooler than our last memory foam mattress which had a tendency to trap heat. I would describe our previous mattress as firm to medium firm and the Zoma feels a bit softer than that, but I still find it very comfortable. The price was great. We got our king for about $800 with a promotional discount. The shipping was free and it arrived in about 4-5 days. Overall we are very happy with our mattress and would recommend others check out Zoma if you are looking for a comfortable and affordable mattress.


I take a good night's sleep very seriously and am very pleased with my Zoma mattress. Amazing quality, and extremely comfortable, and great for my back aches. The packaging is beautiful and makes transporting it a breeze!

Michael W.

I went back to my parents and slept on my old bed for thanksgiving. Could not sleep at all. You've ruined my childhood bed for me. I'm sleep deprived and completely non-nostalgic.

Dylan S.

This mattress is simply great. I bought the queen and plan to get the frame and pillow next. If the bed is any indication on the comfort and durability of Zoma prodcuts, I can't wait for them to arrive. If you're unhappy with any of your current sleeping products, check to see if zoma makes a replacement first.

Shane B.

I had a Casper before and I hands-down like the ZOMA more than my previous bed. It's just soft enough to let you sink in but supportive enough to keep your posture in good shape throughout the night. I would highly recommend it.

Matt B.

My wife and I love this mattress. We are so happy to come home and dive into bed as soon as we get home. After a long day if work and exercise we rest soundly at night - to do it all over again tomorrow! Thanks!

Besart C.

Love the bed and pillow. The bed is awesome to be honest with you, love sleeping in it. Actually, some of the best sleep in my life — and every time I travel, I miss it.

Victor M.

I was recently in the market for a new mattress and was looking for something that can help me sleep better while also supporting my muscles when recovering from my workouts.

Cole K.

I am a 26 year old man who has recently been having lower back pain. After wrongly assuming I had been lifting wrong or sitting too much at work, I started to realize that the culprit was my mattress. I had a run of the mill spring mattress with a memory foam topper. As a back sleeper I found my lumbar spine was sinking in too much as I slept. I did extensive research and stumbled across "Zoma." My first night completely exceeded my lofty expectations. Thinking it may have been a one off, I remained cautiously optimistic. Fortunately after a month of sleeping on this product, I remain just as satisfied as my first night on this high quality mattress. Thank you Zoma!

Brandon Z.

I was able to set up this mattress and bed frame by myself without the use of any tools. Being an athlete, I’m fully aware of how important sleep is for the recovery process. This mattress has elevated my game! I’m feeling more rested each night which allowing me to focus more on the field! The mattress really molds to my body to the point where I wake up in the exact same position I fall asleep in. 5 stars no doubt! I’d recommend this to anyone looking to be more productive during the day!

Upgrade your sleep today.


King Size Mattress FAQs

What is the best king size mattress?

The best mattress is different for everyone, as we all have different sleep needs.

The best king size mattress should provide back support and pressure relief for many years to come.

As you shop, you should factor in your preferred comfort levels and budget.

Mattress Type Pros Cons Good for
Memory Foam
  • Pressure-relieving
  • Conformability
  • Quiet
  • Excellent motion isolation
  • Hypoallergenic
  • May trap body heat
  • A sleeper may feel "stuck"
  • Off-gassing
Side sleepers
Back sleepers
Stomach sleepers
Combo sleepers
  • Responsive
  • Contouring
  • Aerated for
  • Isolates motion
  • Hypoallergenic
  • Heavy
  • Firmer feel than many sleepers expect
  • Expensive
Side sleepers
Back sleepers
Stomach sleepers
Combo sleepers
  • Bouncy
  • Cooling
  • Edge support
  • Little to no pressure relief
  • Motion transfer
  • Noisy coils
  • Prone to sagging
  • Allergens and dust mites may accumulate
Back sleepers
Stomach sleepers
  • Bouncy
  • Breathable
  • Pocketed coils isolate motion
  • Foam layers block out allergens
  • Noisy coils
  • Coils transfer more motion with age
  • May sag within a few years
  • Expensive
Side sleepers
Back sleepers
Stomach sleepers
Combo sleepers

Memory Foam
Much of memory foam’s popularity comes from how easily it can be shipped bed-in-a-box style.

Much of memory foam’s popularity comes from how easily it can be shipped bed-in-a-box style. Companies can compress the material to fit into a small box, and selling it online directly to a customer cuts down on the cost of a middleman.

Manufacturers typically construct memory foam mattresses with two to three layers of foam. The layers of a memory foam mattress influence the bed’s feel—for example, a thicker comfort layer provides a softer feel.

The top memory foam layer cradles a sleeper, while a support foam (often polyurethane foam) forms the base. A transition layer in between the two can make the bed more responsive, preventing the sleeper from feeling stuck.

Memory foam is hypoallergenic, as its density prevents allergens and dust mites from finding a way into the mattress. This density can be a drawback, though, as body heat can get trapped inside. Infusing the foam with cooling gels or other conductive materials (copper, graphite, charcoal) can disperse unwanted heat.

Some customers notice a chemical smell from their new foam mattress, particularly if it’s made with lesser quality foam. The odor is caused by chemical compounds that break down at room temperature in a process known as off-gassing; typically, the smell should vanish within 3 to 7 days.

Latex mattresses contour to a sleeper’s body like memory foam, though many latex mattresses feel firmer than memory foam.

The process of producing a natural latex bed is eco-friendly. Rubber sap is harvested and processed through Dunlop or Talalay methods. Dunlop is the firmer, less expensive option.

Latex mattresses are not widely available, with most restricted to online sellers. Many latex mattresses carry high prices, although some customers don’t mind as natural latex mattresses can last between 10 to 20 years.

Innersprings are the traditional choice of mattress. With bouncy, breathable coils, innersprings remain a popular choice for mattress shoppers.

Innersprings have one of the lowest customer satisfaction ratings. The thin layer of fabric or foam on top can’t completely mold to the body, which allows pressure points to develop. More people are moving away from innerspring mattresses to try beds that better contour to their body type, like memory foam or latex.

Manufacturers designed hybrid mattresses to offer the best of innerspring and foam beds while minimizing their drawbacks.

To be considered a hybrid, the bed must have 2 to 3 inches of foam to provide pressure relief. Most hybrids contain a layer of wrapped coils—the foam or fabric each coil is wrapped in allows them to react individually, preventing motion transfer.

Are there different types of king size mattresses?

Yes, there are four types of king size mattresses. Many couples like the split varieties, as it allows them to customize their side of the bed. Split mattresses also work well with adjustable bases.

Standard King
76 inches by 80 inches

California King
72 inches by 84 inches

Split King
Two Mattresses, each 38 inches by 80 inches

Split California King
Two mattresses, each 36 inches by 80 inches

What should I look for when buying a king size mattress?

When shopping for a mattress, look for:

  • Quality materials: Low-density foams and too thin coils will wear out quicker than materials of a higher quality.
  • Correct firmness: The wrong firmness can misalign your spine. A soft to medium feel mattress suits side sleepers, while back sleepers need a medium-firm to firm mattress, and stomach sleepers a firm mattress.
  • Temperature regulation: You might wake in the night if your body grows too hot. Foams infused with cooling gels and other conductive materials (such as copper or graphite) can wick away body heat. Cutouts in the mattress’s surface and added air channels can make a mattress more breathable.
  • Hypoallergenic properties: The density of a foam comfort layer keeps allergens from penetrating a mattress. If you’re sensitive to synthetic materials, look for a certified mattress made without harmful chemicals.
  • Motion isolation: If you share a bed, you want a mattress that keeps you from feeling your partner’s every movement. A mattress with a foam layer minimizes transfer as the material absorbs movement at the point of impact.
  • An extensive sleep trial and warranty: Many sleep trials last between 90 to 120 days, and most mattress warranties cover the first 10 years.
  • A good price:Online mattresses have lower prices, as the sellers have less business costs. Online mattresses also usually offer free deliveries and free returns, for further savings.

How much space does a king size Zoma mattress need?

We recommend leaving about 30 inches of space around your bed in a room that’s at least 12 feet by 9 feet. Don’t forget to save room for your bedroom furniture!

What if my king size Zoma mattress feels too soft or firm?

A mattress with a lengthy sleep trial period lets you test if a bed feels right for you—Zoma gives a sleeper a 100-night trial from the day of delivery. If your mattress feels uncomfortable past the sleep trial, you can change its feel with a topper. A topper adds a few extra inches of cushioning until you’re ready to buy a new mattress.

To prevent yourself from buying a mattress with the wrong firmness, read mattress reviews and customer feedback. See if anyone received a firmer or softer mattress than expected.

If your bed has recently grown too soft or too firm, it may be time for a replacement. Foam mattresses can soften with age or firm up as repeated usage flattens the comfort layer.

Can my weight affect the Zoma mattress feel?

Yes, your body weight can change how a mattress feels. Heavy people compress the comfort layer of a mattress more deeply, while lightweight sleepers place less pressure on the mattress surface.

Heavyweight sleepers should look for a firmer mattress and lightweight sleepers a softer mattress. Sleeping position and personal preference also determine what mattress firmness is right for you.

How often should you replace a Zoma mattress?

A memory foam mattress like the Zoma has an expected lifespan of 7 to 10 years—which is why every Zoma mattress includes a 10-year warranty.

Other types of mattresses have different life expectancies. For example, hybrids and innersprings often last between 5 to 7 years.

Does a Zoma king size mattress need a box spring?

We advise against keeping a memory foam mattress on a box spring, as doing so may damage the foam. A box spring’s construction is not solid enough to keep parts of a foam bed from dipping down, which stretches the mattress out of shape.

Solid or slatted bed frames can offer the even support a memory foam mattress requires. However, a slatted foundation must have its slats spaced no more than 3 inches apart—if the slats are too far apart, the mattress may sag between the slats and compromise its support.

Where are Zoma mattresses made?

We make our mattresses to order here in the United States. Every mattress is made with CertiPUR-US® certified foams and an eco-friendly manufacturing process.

How big is a king size mattress?

A king size mattress is 76 by 80 inches, or 150 centimeters by 200 centimeters. A king size bed is approximately 16 inches wider than a queen size bed, so it gives each person (if shared by a couple) 38 inches of personal space.

What is the average price of a king size mattress?

On the low end, the average price of a king is around $1,000, while higher-end models can cost up to $2,000 or more depending on the materials.

Do two full mattresses make a king?

No, but two twin XL mattresses pushed together make a king mattress. In fact, a split king is just that—two twin XL beds side by side.

Can you fit a king size mattress on a queen size frame?

A king size mattress is 16 inches wider than a queen size bed, so although the length is the same (80 inches), you will have trouble fitting a king mattress on a queen frame.

Are queen or king size mattresses best for couples?

It depends on the couple’s preferences. If the couple co-sleeps with their children, they might need the extra space that king size beds provide. Additionally, some couples are restless sleepers, and in order to avoid disturbing their partner, each needs more personal space on the mattress.