Searching for the best king size mattress topper? Well, look no further. Here at Sleepopolis, we test hundreds of sleep products to find the best out there and make your search easier. We’ve rounded up some of our favorite mattress toppers — all available in a king size — that will work for a variety of different sleepers.
Not sure what you want exactly? Be sure to take a look at our buying guide at the end of this page to help determine what type of mattress topper will best suit you and your king-sized bed.
Best King Size Mattress Topper
- Best Overall: Nolah Mattress Topper
- Best Luxury: Saatva Graphite Mattress Topper
- Best for Side Sleepers: Tempur-Pedic TEMPUR-Adapt Mattress Topper
- Best for Back Sleepers: Layla Mattress Topper
- Best Down Alternative: Brooklinen Down Alternative Mattress Topper
- Best Budget: Brooklyn Bedding Gel Swirl Memory Foam Mattress Topper
- Best for Stomach Sleepers: Helix Plush Mattress Topper
- Best Anti-Slip: Puffy Mattress Topper
- Best Latex: Avocado Organic Latex Mattress Topper
- Best Plush: Parachute Down Mattress Topper
Best Overall – Nolah Mattress Topper
Nolah Mattress Topper
The Nolah Mattress Topper is a high-quality product boasting a CertiPUR-US certification. Nolah's signature foam is described as more durable, plush, and cooling than other foams on the market.
Sleepopolis Score
4.90 / 5
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The Nolah mattress topper is made from two inches of Nolah’s proprietary AirFoam and is available in two firmness levels: Plush or Luxury Firm. Having two firmness options makes this topper versatile for a variety of sleepers — Nolah recommends the Plush version for dedicated side sleepers and the Luxury Firm for both side and back sleepers.
Why We Love This Topper
- The Nolah mattress topper features straps in each corner to secure it to your mattress — no worries about it slipping or sliding on the surface of your bed.
- The topper features an organic cotton cover, which feels soft to the touch, and will help to ensure durability of the topper over time.
- Nolah’s AirFoam strikes a nice balance between the contouring of memory foam and the bounciness and cooling of latex foam.
Keep In Mind
- This topper is a bit spendier, especially for the king size, so it might not be the best choice for budget shoppers.
Read our full Nolah mattress topper review to learn more.
Best Luxury – Saatva Graphite Mattress Topper
Saatva Graphite Mattress Topper
This high-quality topper is made with an organic cotton cover, graphite-infused memory foam, and elastic straps.
Sleepopolis Score
4.80 / 5
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If you’re looking for a luxury product, Saatva is almost always a good option. Their Graphite mattress topper is no exception — made with three inches of graphite-infused memory foam and an organic cotton cover, this topper is high-quality and ultra-comfortable.
Why We Love This Topper
- Hot sleepers will likely appreciate the breathable cotton cover and cooling graphite infusions utilized in this topper to counteract memory foam’s natural tendency to trap heat.
- The foam used in this topper is thick and high-density, offering excellent cushioning and pressure relief for both back and side sleepers.
- The Saatva mattress topper features straps in each corner to secure it to your mattress.
Keep In Mind
- This topper is spot-clean only — the cover can’t be removed to be machine washed, as many other similar toppers’ covers can be.
Read our full Saatva Graphite mattress topper review to learn more.
Best For Side Sleepers – Tempur-Pedic TEMPUR-Adapt Mattress Topper
TEMPUR-Adapt + Cooling Mattress Topper
The TEMPUR-Adapt is a great mattress topper with a soft memory foam feel that offers impressive pressure relief!
Sleepopolis Score
4.50 / 5
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Mattress toppers can be a great option for side sleepers to get more pressure relief and cushioning on their shoulders and hips if their current mattress is a bit too firm. The TEMPUR-Adapt mattress topper is a great option for side sleepers, as it is made with three inches of Tempur-Pedic’s proprietary TEMPUR Material foam, which is thick, slow-moving, and offers deep contouring.
Why We Love This Topper
- The TEMPUR Material foam used in this topper is super dense and supportive, providing a classic memory foam feel. While it takes a while to fully sink in, once you do, the topper will conform cozily around you for excellent pressure relief.
- The TEMPUR-Adapt topper features a removable cover that can be machine washed. Tempur-Pedic also says the cover — made from polyester — is resistant to mold, allergens, and dust mite dander.
- In addition to being an excellent choice for side sleepers, the TEMPUR-Adapt topper is comfortable for back sleepers, too.
Keep In Mind
- The TEMPUR-Adapt topper might not be the best choice for hot sleepers — memory foam naturally traps heat, as it uses your body heat to mold around you. This memory foam topper doesn’t have any cooling properties, such as gel memory foam or a breathable cover, to counteract that.
Read our full TEMPUR-Adapt mattress topper review to learn more.
Best for Back Sleepers – Layla Mattress Topper
Layla Mattress Topper
A memory foam topper from Layla is a great way to extend the life of your current mattress.
Sleepopolis Score
4.20 / 5
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If you’re a back sleeper looking for a little extra cushioning on your bed, then the Layla mattress topper could be a good option for you. Made with two inches of copper-infused memory foam and a soft outer cover, the Layla mattress topper offers a nice mix of support and pressure relief.
Why We Love This Topper
- The cover of the Layla mattress topper is soft and features straps to prevent the topper from shifting around on the surface of the mattress.
- The copper infusions in the memory foam help to draw heat away from the body and make the foam antimicrobial.
- The foam offers a slow sinking-in feel — the foam feels high-density and supportive, so you shouldn’t sink right through it.
Keep In Mind
- With only two inches of foam, the Layla mattress topper might not be the best choice for heavier sleepers, who weigh 250 pounds or more. A thicker topper will allow more room to sink in for pressure relief if you are heavier.
Read our full Layla mattress topper review to learn more.
Best Down Alternative – Brooklinen Down Alternative Mattress Topper
Brooklinen Down Alternative Mattress Topper
The Brooklinen Down Alternative Topper is a cooling gel-infused, hypoallergenic, animal-friendly alternative to traditional down toppers.
If you’re looking for a plush, cloud-like pillow top layer to add to your mattress, but you still want your bed to be hypoallergenic, the Brooklinen Down Alternative mattress topper might be right for you. This topper is filled with microgel — a soft and silky material — instead of feathers, and its surface includes a tufted construction to make sure this microgel is equally distributed across the topper. This mattress topper is pretty thin, so we recommend it to sleepers who want to add some plushness and a fluffier feel to their bed, without changing the overall firmness of their mattress too much.
Why We Love This Topper
- This topper features a 100 percent cotton shell, which allows for increased breathability.
- The Brooklinen Down Alternative topper utilizes a waterproof barrier to increase the longevity and cleanliness of your mattress over time.
- The stretched skirt included on the Brooklinen Down Alternative topper allows it to fit on mattresses up to 18” deep.
Keep In Mind
- Some customers did report that this mattress topper was thinner than they expected, and they did not feel like it added much to their original bed.
Our full Brooklinen Down Alternative mattress topper review is coming soon!
Best Budget – Brooklyn Bedding Gel Swirl Memory Foam Mattress Topper
Brooklyn Bedding Gel Swirl Mattress Topper
The Brooklyn Bedding Gel Swirl Topper is made with a 2.5-pound layer of gel memory foam pairs ultimate optimal pressure point relief with just the right amount of responsiveness.
Read Full ReviewMany customers opt for a mattress topper over a new mattress because of budgetary constraints, but still many mattress toppers can be quite spendy. The Gel Swirl Memory Foam mattress topper from Brooklyn Bedding makes for a great budget-friendly option for shoppers looking to soften their mattress.
Why We Love This Topper
- Hot sleepers who like memory foam will appreciate the gel infusions in this topper, which help it to sleep temperature neutral. Memory foam traps heat by nature and the gel helps to counteract that.
- Back and side sleepers should both experience cushioning and pressure relief on this topper.
- This topper is available in a 2-inch or 3-inch version. The 3-inch version will allow more room to sink in for pressure relief.
Keep In Mind
- This topper doesn’t feature a cover or straps, as many other foam toppers on this list do. However, with its more budget-friendly price point, that is to be expected.
Read our full Brooklyn Bedding Gel Swirl Memory Foam mattress topper review to learn more.
Best For Stomach Sleepers – Helix Plush Mattress Topper
Helix Plush Mattress Topper
The Helix Plush mattress topper adds a thin layer of plushness and quilting to the top of a mattress. It doesn't dramatically change the firmness or feel, but does add a bit of luxurious plushness.
Sleepopolis Score
4.40 / 5
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Mattress toppers aren’t always the best product for stomach sleepers, who tend to need a sturdy and firm sleep surface. When sleeping on a too-soft bed, stomach sleepers’ hips can sink down into the mattress, causing their back to bow out of alignment. However, the Helix Plush mattress topper offers an option to plush-up your mattress without making it too soft for stomach sleeping.
Why We Love This Topper
- The Helix Plush topper features an outer cover made from a blend of polyester and bamboo rayon and is filled with polyester fiber fill. It utilizes baffle box stitching to keep the fill evenly distributed and features a skirt to secure the topper to your bed.
- This topper acts as a mini pillow-top layer on your mattress — creating a plusher surface without making the bed too soft.
- Sleepers with allergies will appreciate that this topper is hypoallergenic and machine washable.
Keep In Mind
- This topper won’t radically alter the feel of your mattress, so it’s not a good option for sleepers looking to get lots of contouring or pressure relief.
Read our full Helix Plush mattress topper review to learn more.
Best Anti-Slip – Puffy Mattress Topper
Puffy Deluxe Mattress Topper
The Puffy mattress topper is a great solution for those looking to firm up a soft mattress, or soften a firm mattress! It has an anti-slip grip to keep it from falling off your bed.
Sleepopolis Score
5.00 / 5
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There are a few toppers on this list with straps to secure them to your mattress, but the Puffy mattress topper takes it a step further with a skirt that goes all the way around your mattress, like a fitted sheet. This skirt keeps the foam topper securely in place and helps it blend seamlessly with your mattress. The bottom side of the cover also features anti-slip grips to further keep the topper in place.
Why We Love This Topper
- The Puffy mattress topper is made with two inches of memory foam and features a polyester-bamboo blend cover.
- The skirt has deep pockets and can accommodate a mattress up to 15 inches tall.
- This topper provides excellent pressure relief and contouring for both back and side sleepers. Plus, it is available in a Soft or Firm version.
Keep In Mind
- The Puffy mattress topper is only two inches thick, so it might not be the best option for heavier sleepers, who weigh 250 pounds or more. Heavier sleepers may want thicker foam to allow more room to sink in.
Read our full Puffy mattress topper review to learn more.
Best Latex – Avocado Organic Latex Mattress Topper
Avocado Organic Latex Mattress Topper
This organic topper is made with latex, cotton, and wool for a cozy but eco-friendly sleep experience.
Sleepopolis Score
4.60 / 5
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Latex foam is a popular option for mattress toppers because it’s buoyant, responsive, and cooling. It provides pressure relief, but you’ll have a more “on top of the bed” feel than with memory foam. The Avocado Organic Latex mattress topper is a great option — made with an organic cotton cover, a layer of organic wool, and organic latex foam, this topper is both natural and cozy.
Why We Love This Topper
- The Avocado Organic Latex mattress topper is available in a Plush or Firm option, allowing you to choose the feel that best suits your preferences.
- Hot sleepers will appreciate how cool this topper sleeps. Latex maintains a naturally cool temperature, plus the cotton cover allows for lots of airflow.
- This topper is easy to move around on, making it a good choice for combination sleepers or folks with mobility issues.
Keep In Mind
- With high-quality, organic materials in its construction, this topper is somewhat pricey. It likely won’t be the best choice for budget shoppers.
Read our full Avocado Organic Latex mattress topper review to learn more.
Best Plush – Parachute Down Mattress Topper
Parachute Down Mattress Topper
This mattress topper has two layers of down and feathers, creating an especially plush sleeping experience.
Sleepopolis Score
4.30 / 5
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Looking for some additional plushness on your bed? The Parachute Down mattress topper could be a great option. This topper is filled with a mix of premium, all-natural European white down and feather fibers, with a 100 percent sateen cotton shell, to offer cloud-like plushness to your mattress.
Why We Love This Topper
- This topper utilizes three-dimensional baffle box stitching for even fill distribution, as well as a dual-chamber design with two layers of down.
- The Parachute Down topper is three inches tall, allowing lots of room to sink into the cozy down.
- Parachute manufacturers this topper in the U.S.
Keep In Mind
- The Parachute Down topper is dry-clean only.
Read our full Parachute Down mattress topper to learn more.
How To Choose A King Size Mattress Topper
Mattress toppers make a great addition to a bed that isn’t super comfortable. Whether it’s too firm, doesn’t offer enough contouring for pressure relief, or you just plain don’t like how your mattress feels, a mattress topper can help you change up the feel of your bed without having to invest in a whole new mattress.
If you’re shopping for a new mattress topper for your king size mattress, here are a few things to take into consideration.
Sleeping Position
As with most sleep products, it’s important to take your primary sleeping position into consideration when shopping for a mattress topper. Most people sleep primarily on their back, stomach, or side — those who frequently switch between positions are called combination sleepers.
Back Sleepers
Back sleepers tend to have the most leeway when it comes to shopping for a mattress topper. Generally, the most important thing for back sleepers is to ensure that they feel properly supported and that their spine is aligned as they are sleeping.
If your current mattress feels too soft, you may want a mattress topper made from a high-density memory foam or from latex foam for more support. If your current mattress feels too firm, look for soft, conforming memory foam to fill in your lumbar region and provide pressure relief around the shoulders.
Stomach Sleepers
Stomach sleepers tend to need a firm, supportive sleep surface to keep their hips from sinking into the bed. Sinking hips will cause the sleeper’s back to bow out of alignment, which can lead to back pain down the road. For this reason, many toppers don’t work for stomach sleepers, as they are generally designed to make the bed feel softer.
Stomach sleepers can opt for a thinner topper (or even a mattress pad) or a topper made from a material like latex that won’t allow them to sink into the material, as memory foam tends to.
Side Sleepers
If you sleep on your side, it’s likely you need extra pressure relief around your shoulders and hips, as your entire body weight is supported on these sensitive joints as you sleep. Because of this, side sleepers generally want a mattress topper that will allow for deep contouring and pressure relief. Memory foam will usually be the best bet, but there are some softer latex foams or down toppers that can do the trick.
Materials
It’s also important to consider what material a mattress topper is made of. Generally, toppers will be made with either a foam block or a down/down-alternative fill. Foam toppers can be made from memory foam, polyurethane foam, latex foam, and other foams. Down toppers are filled with the soft, quill-less feathers from the underbelly of birds and down-alternatives are materials meant to mimic the feeling of down (these are generally synthetic).
Some toppers also feature covers, straps, or skirts, which could be important features, depending on your needs and preferences. Covers can be made from cotton, polyester, bamboo, and a variety of other fabrics. If you sleep hot, a breathable, natural material like cotton or a temperature-regulating fabric like bamboo is a good choice.
Additionally, some toppers feature materials intended to promote cooling. These can include gel infusions, copper infusions, graphite infusions, Phase Change Material, and more.
Budget
Your budget is always an important factor in any purchase. Mattress toppers can range pretty widely in price, particularly depending on materials. If you are shopping for a king size mattress topper, I would expect to pay at least $100. There are some cheaper options, as well as many options higher in the hundreds. Thickness, quality of materials, and additional features will all determine the price of a topper.
Thickness
Mattress toppers come in a variety of different thickness options. Generally, they range between one and four inches in thickness. How thick of a topper you need depends on your sleeping position, body type, and personal preferences. Thicker toppers generally offer more pressure relief and room to sink in, making them a good choice for both side sleepers and heavy sleepers, who weigh 250 pounds or more.
King Size Mattress Toppers FAQs
How much do king mattress toppers cost?
King size mattress toppers tend to range between $100 and $400, although there are exceptions above and below that range. Because they are larger than most other sizes, king size mattress toppers are generally more expensive, but can certainly still be much less expensive than buying a whole new mattress.
What is the best mattress topper on the market today?
It really depends! With so many factors to consider for each individual sleeper, there is no “one size fits all” mattress topper. For some of our favorite options, take a look at our best mattress toppers page.
Is three inches too much for a mattress topper?
No, three inches is a totally normal thickness for a mattress topper. It all depends on how much room you want to sink into your topper. If you need lots of pressure relief, three inches will work great. If you just want a thin additional comfort layer, one or two inches can do the trick.
Does a mattress topper make a big difference?
A mattress topper can make a big difference in comfort, but it all depends on the specifics of your bed and topper. If your bed is a little too firm or doesn’t offer enough pressure relief, a mattress topper can be a great solution. However, if your mattress is 10 years old or seriously deteriorating, it may be better to put your money towards a whole bed. Take a look at our best mattress page for some great options.
Do you put a fitted sheet over a mattress topper?
Yes, your fitted sheet goes over your mattress topper. Think of your mattress topper as the top layer of your mattress!
