A 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
Latex	Responsive Contouring Aerated for breathability Isolates motion Hypoallergenic	Heavy Firmer feel than many sleepers expect Expensive	Side sleepers Back sleepers Stomach sleepers Combo sleepers
Innerspring	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
Hybrid	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
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.

Innerspring
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.

Hybrid
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.

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

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.

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!

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.