Uses a high-density base foam to ensure your body has the support it needs. Cooling gel is a nice addition for those people who feel too hot when sleeping on a memory foam mattress. Multiple layers offer a high level of performance. Very thick mattress at 14".
Too soft for some. Mattress is really heavy at 142 lbs.
Includes a layer with antimicrobial properties to prevent odors. Top layer has memory foam infused with cooling beads that draw heat away from your body while you sleep. Makes use of micro-coils to provide the support your body needs for a restful night of sleep. 14" thick.
Incredibly expensive. Heavy mattress to move at 135 lbs.
Battles odors with natural ingredients. Uses multiple layers of foam, including top layer of memory foam, to give you the perfect level of softness and body support. Nice to find a 12" thick mattress in this price range. Uses an infusion of green tea extract and castor seed oil to create a barrier to odors.
Doesn't offer a cooling gel layer, so you might feel hot sleeping on the foam.
Foam is firm enough to support your body nicely no matter what position you sleep in. Soft top layer uses a mixture of graphite and gel, so doesn't leave you feeling too hot. Soft foam that adapts to your body position. Works with any kind of king-size bed frame or on the floor.
Only 10" thick. Comes at a higher than average price point.
Uses a 3" layer of memory foam infused with gel on the top to help you feel comfortable all night. Features a dense memory foam base layer to provide support for your entire body. Ships with a removable cover that's easy to clean. Nice level of firmness in the lower layer.
Only 10" thick. Not enough cooling gel included for some people.
We purchase every product we review with our own funds — we never accept anything from product manufacturers.
We purchase every product we review with our own funds — we never accept anything from product manufacturers.
Eating right and working out regularly are crucial to a healthy lifestyle, but getting a good night’s sleep can be just as important to feeling fit and avoiding illness. The right mattress makes all the difference in how well you sleep, which is why buying a high-quality king mattress can be a wise investment for your overall health.
A king mattress is one of the largest mattresses you can buy. It measures 76 inches wide and approximately 80 inches long, so it’s an ideal option if you share a bed with a partner and want to make sure that you both have plenty of space. However, it can also work well for larger single sleepers or people who prefer a lot of space to move around in while they sleep.
Not all king mattresses are created equal, though, so it’s important to know what to look for before you shop. BestReviews has you covered. Our shopping guide has all the information you need to find the ideal king mattress for your bed. If you’re still not sure which model to choose, we’ve included some of our top picks to make your shopping as easy as possible.
The most important decision to make when you’re shopping for a king mattress is what type of mattress you prefer. The main types to choose from include the following:
Memory foam: This type of mattress offers superior support and comfort. It is a particularly good option if you sleep on your side. Memory foam molds to the contours of your body, so it provides effective support for shoulders and hips. These mattresses don’t sag the way some other types can, so you don’t have to worry about flipping the mattress regularly.
Gel: This type of mattress usually features a combination of foam and gel, so it feels a little different than a foam mattress. A gel mattress doesn’t absorb body heat the way other mattresses do, so it’s an ideal option if you get hot while you sleep.
Innerspring: This type of mattress has a series of internal metal springs that provide support. More springs or coils usually means more support, but the distribution of the coils determines how well the mattress conforms to the shape of your body. Innerspring mattresses work well if you sleep on your back, side, or stomach.
Pillow top: This type of mattress has an extra upholstered layer on top of what is usually an innerspring mattress. It has an extremely cushiony feel and provides excellent alignment for your back.
Adjustable: This type of mattress allows you to have support exactly where you need it because the base is adjustable in specific areas. You can usually elevate your head or feet and increase support for your back. This makes an adjustable mattress ideal if you suffer from back pain, muscle pain, sleep apnea, or acid reflux.
Most king mattresses are approximately 10 inches thick. However, you can find models that are thin as 5 inches or as thick as 15 inches. In most cases, the thickness you prefer depends on your weight. If you’re fairly light, a thinner mattress usually feels more comfortable. If you’re heavier, you’ll likely sleep better on a thicker mattress.
If you have trouble staying asleep because you’re just too hot, this Classic Brands king mattress is for you. It has all the pressure-relieving benefits of memory foam but with a high-density, cool, gel-infused layer that helps regulate temperature, so you never get too warm. We also love its 14-inch thickness, which offers maximum comfort.
Most king mattresses are used by two sleepers at the same time, so it’s easy for one partner to disturb the other when they get in and out of bed or toss and turn all night. That’s because the movement on one side of the mattress results in motion transfer that’s felt on the other side. Some king mattresses are made with softer, adaptive interior layers that are able to limit motion transfer, meaning a restless sleeper is less likely to disturb a partner.
For many people, a bedroom that’s too warm makes it difficult to get a good night’s sleep. If you’ve adjusted the HVAC in your home and are still too hot at night, choosing the right king mattress for your bed may help.
Many mattresses capture and trap body heat, making you hot and disrupting your sleep. To stay more comfortable, opt for a king mattress that maintains a neutral temperature. Hybrid and innerspring mattresses allow air to circulate, so they’re ideal options for hot sleepers. For the coolest night’s sleep, choose a gel mattress. These are the best at boosting air circulation so your body heat isn’t trapped by the mattress and you stay cooler. Avoid foam and latex, which tend to sleep the hottest.
If you suffer from allergies or get sick regularly, it can help to select a king mattress with some type of antimicrobial, dust-resistant layer to keep germs, dust mites, and mold at bay. Foam and latex are naturally antimicrobial and dust mite and mold resistant, while innerspring and pillow top mattresses must have some sort of antimicrobial and dust-resistant cover to prevent you from getting sick while you sleep.
These days, it’s possible to buy “smart” versions of nearly any household item, and king mattresses are no exception. If you’re having trouble sleeping and want a mattress that can help diagnose and address your issues, consider a smart king mattress. These models usually offer a sleep-tracking feature that allows you to better understand your sleep patterns, as well as a temperature-regulation feature. Some are even equipped with an alarm to make sure you wake up on time. Just know that you need a smartphone or tablet to download the mattress-connected app that stores your data.
Opt for an innerspring king mattress if you prefer a bouncier feel for your bed.
Change your sheets at least once a week to prevent dirt and dust from collecting on your mattress and attracting dust mites.
If you sleep on your back, foam and hybrid king mattresses are usually your best bet.
King mattresses vary in price based on the type and thickness. Most models range from $200 to $5,800.
Memory foam king mattresses cost $575 to $900 for models that are between 6 and 10 inches thick. For mattresses that are between 10 and 15 inches thick, you’ll pay between $900 and $2,000.
Gel king mattresses are a fairly affordable option. Models between 6 and 10 inches thick range from $400 to $720. Those between 10 and 15 inches thick cost between $720 and $1,575.
Innerspring king mattresses are typically the most affordable. Models that are between 6 and 10 inches thick range from $200 to $700. Models that are between 10 and 15 inches thick cost between $700 and $1,325.
Pillow top king mattresses can be fairly pricey because they tend to be on the thicker side. Those that measure about 10 inches thick range from $1,400 to $2,500. Those that measure more than 10 inches thick can cost between $2,500 and $5,000.
Adjustable king mattresses are usually the most expensive option. You’ll usually pay between $3,700 and $5,800, depending on the number of features.
The Zinus Green Tea mattress is one of the more affordable king mattresses on the market, but that doesn’t mean you have to sacrifice quality. It has multiple layers of foam, including memory foam, for plenty of support and cushioning, but what really sets it apart is the fact that it’s infused with green tea and natural castor seed oil to fight odors and bacteria for the freshest sleeping experience around.
Keep the mattress dry. To maintain your king mattress, it’s important to keep it dry. Adding a mattress cover before you make up your bed can help prevent the growth of mold and mildew. Wash the cover every few weeks to keep it clean.
Vacuum your mattress. Even if you change your sheets regularly, it’s a good idea to vacuum your mattress every week. That helps remove dead skin cells that may attract dust mites, which can trigger allergies.
When it comes to king mattresses, there are so many on the market that there’s an ideal option for every sleeper. The patented airflow transfer system in the Snuggle-Pedic King Mattress makes it a perfect choice for anyone who gets hot while they sleep. It’s also eco-friendly certified, hypoallergenic, and dust mite resistant. If you’re on a budget and prefer a medium-firm feel, we also like the Weekender Hybrid King Mattress. It has a combination of three different types of foam for comfortable cushioning and breathability.
Q. How do I know when it’s time to replace my mattress?
A. In general, most mattresses should be replaced at about the seven-year mark. If you wake up with a sore back, neck, or shoulders, it’s likely time for a new mattress. Keep an eye out for indentations or sagging in your mattress as well, which are signs that it has seen better days.
Q. What type of king mattress is best if I sleep on my stomach?
A. If you’re a stomach sleeper, avoid memory foam, which molds to your body and may feel slightly suffocating if you sleep face down. Opt for a firmer mattress to offer effective support. Innerspring and firm foam models are ideal options.
Q. What details are most important if I’m buying a king mattress online?
A. Buying a mattress online is easier in many ways, but the one drawback is that you’re not able to test it out to see if it suits your needs the way you would in a store showroom. When you’re shopping online, always check the return policy to make sure that you’ll have enough time to test the mattress and will receive a full refund if you’re not happy with the model you choose.
BestReviews wants to be better. Please take our 3-minute survey,
and give us feedback about your visit today.