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Home / Best Mattress Toppers of 2021 / Best King Mattress Toppers

Written by

Daniel Noyed

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A king size mattress may be more comfortable for couples because it gives them extra room to spread out. But while sleepers may have the space they need to rest in their preferred position without disturbing their partners, that doesn’t mean the mattress itself will feel ideal to them.

When a mattress is too soft or too firm, a topper is a convenient solution. Most toppers are between 1 and 4 inches thick, with thicker options affecting the feel of the sleep surface to a greater extent than thinner models. This type of sleep accessory acts as an extra layer that sits on top of the mattress to change its feel, without the expense and hassle of buying a new mattress. Toppers can also help extend the life expectancy of a mattress by absorbing much of the surface-level wear and tear.

We’ll highlight our favorite picks for king size mattress toppers and explain what makes them stand out. We’ll also detail other factors to consider before selecting a topper for your bed.

The Best King Mattress Toppers

Product Details

Leesa Mattress Topper

Best Overall

Leesa Mattress Topper

Leesa Mattress Topper
Price: $299
Material: 2" 2.5 PCF adaptive polyfoam
Firmness: Medium (5)
Who it's best for:
  • Combination sleepers
  •  Partners with different position preferences
  •  Those who tend to wake up when their partner moves
Highlights:
  • Balanced contouring and support for most sleepers
  • Polyfoam construction limits motion transfer
  • Zip-off, washable cover
Leesa Mattress Topper

Use this SleepFoundation.org link for the most current discount on the Leesa mattress toppers

Thanks to its balanced support and contouring, the Leesa Mattress Topper is an exceptional option for those looking to modify their king size bed.

It has a medium feel that rates at a 5 on the 10-point firmness scale, which should soften most sleep surfaces without permitting excessive sinkage. At 2 inches thick, the Leesa Mattress Topper adds some plushness while still allowing the support of the mattress below. This firmness and thickness should feel comfortable for most sleepers regardless of their weight and sleep position, making it particularly suitable for couples with different body types and position preferences.

Adaptive polyfoam serves as the topper’s core. This material contours to a sleeper’s body to help reduce pressure buildup in critical areas like the hips and shoulders, but it regains its shape more quickly than most memory foam to prevent a “trapped in the bed” sensation. Polyfoam’s open-cell structure also allows more heat to escape than memory foam. The topper is encased in a knit fabric cover that’s removable and washable.

Motion isolation and noise control are two of the Leesa Mattress Topper’s greatest strengths, which may make it easier for an individual to stay soundly asleep when their partner moves or gets up during the night. Its conforming properties also provide notable pressure relief, but the lack of bounce may not be ideal for sex.

Customers can try the Leesa Mattress Topper at home during the 30-night trial period. A 1-year limited warranty protects against qualifying defects.

Viscosoft Reflex Gel Mattress Topper

Best Value

Viscosoft Reflex Gel Mattress Topper

Viscosoft Reflex Gel Mattress Topper
Price: $86
Material: 2-3" gel-infused memory foam
Firmness: 2": Medium (5) 3" Medium Soft (4)
Who it's best for:
  • Shoppers on a budget
  •  Those who want a choice of thicknesses
  •  Individuals looking for both bounce and motion isolation
Highlights:
  • Affordable price tag
  • Two thickness/firmness options
  • Close-conforming memory foam construction for exceptional pressure relief
Viscosoft Reflex Gel Mattress Topper

Use this SleepFoundation.org link for the most current discount on the Viscosoft mattress toppers

The ViscoSoft Reflex Gel Mattress Topper adds plush cradling to a mattress without being hard on the wallet.

This topper comes in two firmness options: 2 inches and 3 inches. The 2-inch model rates as a medium (5) firmness, while the 3-inch model has a medium soft (4) feel. The 2-inch model may be good for back and stomach sleepers who want a slightly more supportive sleep surface, while the 3-inch version provides more room for a side sleeper’s hips and shoulders to sink in. This contouring memory foam topper may be most appropriate for individuals who weigh under 230 pounds and feel their existing mattress is too firm.

The Reflex Gel Mattress Topper’s memory foam is specially engineered to be more responsive than traditional memory foam. It hugs the body to help relieve pressure but returns to its original shape relatively quickly when weight is removed. This gives it a slight bounce that may be more conducive to sex than most memory foam toppers. The gel infusion is intended to pull heat away from the body to help reduce the heat buildup often caused by memory foam’s close conforming. That said, the topper may still sleep warm for some.

If you decide the Reflex Gel Mattress Topper isn’t right for you, you can return it within 60 days for a full refund of the purchase price. ViscoSoft also provides a 3-year limited warranty that offers repairs or replacements should eligible defects arise.

PlushBeds Memory Foam Topper

Best Cooling

PlushBeds Memory Foam Topper

PlushBeds Memory Foam Topper
Price: $326
Material: 2-3" gel memory foam
Firmness: Medium (5)
Who it's best for:
  • Those prone to sleeping hot on memory foam
  •  Sleepers with pressure point discomfort
  •  Allergy sufferers
Highlights:
  • Open-cell memory foam engineered to provide hug with less heat retention
  • Infused with gel designed to dissipate body heat
  • Optional cotton cover wicks moisture and allows airflow
PlushBeds Memory Foam Topper

Use this SleepFoundation.org link for the most current discount on the PlushBeds mattress toppers

Sleepers often appreciate the close hug of memory foam but not the resulting heat retention. The PlushBeds Cooling Gel Memory Foam Topper sets itself apart with specially engineered materials that help transfer heat away rather than trapping it against the body.

Thanks to the open-cell structure of its memory foam, air circulates more freely to help disperse heat and evaporate moisture. It is also infused with gel beads, which can help draw heat away from the sleeper’s body. Like traditional memory foam, this material cradles the body for exceptional pressure relief, but its close hug shouldn’t retain a lot of heat.

An organic cotton cover is available for an additional charge. This can add to the breathability and moisture-wicking properties while making it easier to freshen up the surface.

PlushBeds produces 2- and 3-inch versions of the Cooling Gel Memory Foam Topper. The 2-inch version may be a perfect match for those looking for a bit of pressure relief, while the 3-inch version may be better for side sleepers and those with a mattress that’s too firm. The medium feel should accommodate all sleep positions, but the 3-inch version may not be supportive enough for stomach sleepers who weigh over 230 pounds.

The PlushBeds Cooling Gel Memory Foam Topper is hypoallergenic and designed to be resistant to mold, mildew, and microbial growth. It is CertiPUR-US certified, which means it passed independent testing for potentially harmful components. A 5-year limited warranty is provided with purchase.

Bear ProTopper

Best Pressure Relief

Bear ProTopper

Bear ProTopper
Price: $345
Material: 2" copper-infused memory foam
Firmness: Medium (5)
Who it's best for:
  •  People who prefer advanced materials
  •  Those with sharp pressure points
  •  Partners from different weight groups
Highlights:
  • 2-inch memory foam core provides standout pressure relief
  • Copper infusion designed to reduce the growth of microbes and transfer heat away
  • Celliant cover engineered to promote circulation, recovery, and temperature regulation
Bear ProTopper

Use this SleepFoundation.org link for the most current discount on the Bear mattress toppers

The Bear ProTopper’s pressure-relieving hug can help ease aches and pains, regardless of the sleeper’s weight and preferred position.

This model consists of 2 inches of copper-infused memory foam that molds to the body for more even pressure distribution. The copper infusion is designed to conduct heat away while helping to reduce the risk of microbial and bacterial growth.

A Celliant fabric cover encases the topper. Celliant is an advanced fabric engineered to reflect infrared energy towards the body, which is thought to promote recovery, improve circulation, and more. This material may also help regulate temperature to support a cooler night’s sleep.

The ProTopper has a medium (5) feel, which balances plushness and support. Taking into account that it is on the thinner side for toppers, sleepers should still benefit from the support of their mattress. This makes the ProTopper suitable for all sleep positions no matter the sleeper’s weight, though it may be especially comfortable for side sleepers.

Its foam construction gives the ProTopper strong motion isolation, noise control, and conforming. However, its hug and lack of bounce may not be ideal for amorous activity.

The ProTopper holds CertiPUR-US certification. It comes with a 100-night trial period with a 30-night required adjustment period. A 3-year limited warranty protects against manufacturing defects.

Latex for Less Topper

Best Latex

Latex for Less Topper

Latex for Less Topper
Price: $339
Mattress Type: 2-3" Ventilated Talaylay Latex
Material: Soft (3), Medium (5), Medium Firm (6)
Who it's best for:
  • Shoppers with strong firmness or thickness preferences
  • People who prefer a responsive sleep surface
  • Those who value sustainable materials
Highlights:
  • Three firmness and two thickness selections to meet different needs
  • Buoyant Talalay latex construction
  • Isolates motion well without hindering movement
Latex for Less Topper

Use this SleepFoundation.org link for the most current discount on the Latex for Less mattress toppers

Constructed with natural, durable latex, the Latex for Less Topper has all the benefits of the popular material while giving customers plenty of options to customize their king beds.

Natural Talalay latex makes up this topper. Talalay latex is buoyant, airy, and supportive. While latex is generally more breathable than memory foam on its own, the Latex for Less Topper is ventilated to further enhance air circulation. This material shapes to the body to relieve pressure, but it spreads the compression over a wider area. Many sleepers compare this to a floating sensation rather than a hug.

Shoppers can select between three firmness options: soft (3), medium (5), and medium firm (6). Which feel is right for you will depend on your weight, sleep position, existing mattress, and personal preferences. In general, individuals who weigh more than 230 pounds and those with a mattress that’s too soft are likely to prefer the medium firm. Sleepers who weigh under 230 pounds and those who have a mattress that’s too firm may gravitate towards the softer options.

The Latex for Less Topper also comes in two thicknesses: 2 inches and 3 inches. The thickness you select will determine how significantly the topper alters the feel of your sleep surface.

Those who purchase the best firmness and thickness for them should feel cradled and supported regardless of their sleep positions. All firmness and thickness options also earn high marks in durability, temperature regulation, noise level, and support. The topper’s springiness should make it responsive enough for sex. While this bounce could lead to some vibrations traveling across the surface, these shouldn’t contribute to major disruptions for most sleepers.

The Latex for Less Topper holds OEKO-TEX certification for safety standards. Buyers can add an organic cotton cover for an additional fee. The topper comes with a 5-year limited warranty that protects against defects like cracking, splitting, and indentations.

How to Choose a King Size Mattress Topper


Choosing the best king size topper requires careful consideration, especially if you are trying to please both yourself and your partner. Since a topper changes the feel of the sleep surface, you may want to put as much thought into finding your perfect match as you would when selecting a new mattress. Focusing on key factors related to construction, performance, and value can help you narrow down your search.

What to Consider When Purchasing a King Mattress Topper

There are plenty of criteria to take into account when purchasing a king mattress topper. Companies are in the business of selling, so some may try to appeal to the broadest customer base possible. Often, they make it seem like their toppers are comfortable for everyone regardless of their sleep position, weight group, existing mattress, and personal preferences. In reality, needs and preferences vary, so focusing on specific aspects may help you to find a topper that’s closer to your ideal match.

Price
King mattress toppers vary widely in price due to differences in materials, quality, and construction. Convoluted polyfoam toppers and fiber toppers are usually the most affordable, frequently costing less than $50. Memory foam, high-density polyfoam, feather, and latex options usually cost a bit more, ranging from around $100 to $700. Down toppers generally cost the most on average, starting at around $200 and reaching over $3,000.

Sleeping Position
A sleeper’s spinal alignment and the location and intensity of their pressure points depend largely on their sleep position. The right topper can make the sleep surface more supportive and pressure-relieving for your chosen position.

For instance, side sleepers may prefer a softer and thicker topper, since it will leave more room for their hips and shoulders to sink in without pressing against their mattress. Back sleepers and stomach sleepers often prefer firmer, thinner toppers for gentle contouring without significant midsection sinkage that could jeopardize their spinal alignment.

Quality Materials
The quality of the materials is one of the most important factors in determining a topper’s durability. High-quality materials typically resist indentations, sagging, and cracking so that you can continue to use your topper comfortably for years to come. While a topper made of quality materials will likely carry a higher sticker price, it may cost less over its lifespan than lower-quality options that require frequent replacement.

Cooling Properties
Sleeping hot is a common issue. Many toppers address this concern with special cooling features that allow heat to escape, wick away moisture, and/or make the surface feel cool to the touch. Pairing a cooling topper with a mattress that tends to retain heat may make the bed more comfortable for hot sleepers.

Firmness Level
Firmness preferences are subject to several factors, but some people tend to prefer certain firmnesses based on their body types. Most sleepers will likely find a medium to medium firm topper comfortable, especially if they weigh between 130 and 230 pounds. However, individuals who weigh under 130 pounds usually prefer a soft or medium soft option for more hug, while those who weigh more than 230 pounds frequently favor a medium firm to firm topper for more support.

Which topper firmness is ideal for you may also depend on the feel of your existing mattress. If your mattress is too firm, you may prefer a softer topper than what is most popular for your weight group. However, if it is too soft, a firm topper may be a better option.

Thickness
The thickness of the topper directly affects how much it changes the feel of the sleep surface. Most toppers range between 1 inch and 4 inches thick, with the thinner options providing a slight adjustment and the thicker models giving your bed a more significant transformation. How much you like the feel of your existing mattress and what sleep position you prefer may influence which thickness is best for you.

Pressure Relief
Many sleepers seek out toppers primarily for added pressure relief, especially if their existing mattress is too firm. Materials like memory foam, polyfoam, and latex redistribute a sleeper’s body weight to reduce pressure buildup around wider areas, like the hips and shoulders.

The thickness and firmness of a topper can contribute to the level of pressure relief an individual experiences. Thicker toppers traditionally have more pressure relief than thinner models since they have extra depth to cradle a sleeper’s curves. A firmness that corresponds to your body weight (softer for individuals under 130 pounds and firmer for those over 230 pounds) should give most sleepers the best combination of pressure relief and support.

Which Type of Mattress Topper Should I Choose?

There isn’t one right answer as to which variety of mattress topper you should choose. Each type carries potential benefits and drawbacks that may make them ideal for some individuals and uncomfortable for others.

To select the best variety of mattress topper for you, you should assess your priorities, preferences, sleep position, and existing mattress. Knowing more about the different types of toppers may also make the decision easier.

Polyfoam 
Polyfoam toppers, especially those with convoluted foam, tend to be some of the most affordable options on the market. These toppers typically regain their shape more quickly and allow more airflow than memory foam, while also contouring to the sleeper’s body for pressure relief and support. However, lower-density, lower-quality polyfoam toppers may wear out faster than other types of toppers.

Memory foam
Memory foam conforms closely to the sleeper’s body, thereby distributing their body weight and relieving pressure. Since memory foam toppers tend to regain their shape relatively slowly when pressure is removed, they absorb a significant amount of motion but have little to no bounce. Toppers made of traditional memory foam are prone to heat retention, but some models use gel infusions or phase change material in the cover intended to help transfer away excess warmth.

Latex 
Latex toppers may use natural, synthetic, and/or blended latex, though natural latex tends to be most popular because of its sustainability. To create natural latex, sap from rubber trees is formulated using either the Talalay or Dunlop process, both of which create a durable, breathable, and buoyant material. Latex toppers redistribute weight to relieve pressure, but the material’s low point elasticity provides more of a floating sensation than a full-body hug.

Feather and Down 
Feather and down toppers, sometimes called featherbeds, typically use duck and/or goose feathers, down, or a combination of the two. Down is the plush inner plumage of a bird, which gives toppers a fluffy, light feel, but also carries a higher price tag. Feather toppers are usually more supportive and less expensive. While both feather and down toppers can feel luxurious, they do not typically provide the same level of pressure relief as foam. They may also allow more motion transfer, make a rustling noise, emit an odor, and/or trigger allergy symptoms.

Wool 
Wool toppers cushion the sleep surface without the same contouring as foam. Perhaps the biggest benefit of wool toppers is their temperature regulation. Wool insulates when it’s cold, draws heat away when it’s warm, and wicks away moisture, allowing for all-season usage.

Frequently Asked Questions About King Mattress Toppers

Should I use one king topper or two twin XL toppers?

Using two twin XL toppers instead of one king topper may be a good option for some couples, but it also has potential drawbacks. It’s beneficial in that each partner can select their ideal firmness rather than trying to find a compromise. Additionally, since the toppers are two separate pieces, motion transfer should be minimal.

But using two twin XL toppers is not without drawbacks. If you or your partner gravitate toward the center of the bed, you may feel the line where the two pieces meet, which may be uncomfortable. Some toppers are anchored in place with corner straps. When used in place of a king topper, two of the straps on each twin XL topper would not have a corner to hold it in place, so they may move around more. If either component shifts during the night, it could create a gap in the center of the bed.

How much do king mattress toppers cost?

King toppers usually cost between $100 and $400, but options are available for most budgets. Affordable options start at just $20, while luxury models can cost over $3,000. Price is often determined by the brand, construction, and materials.

What is the difference between king and California king?

There are important differences between king and California king sizes, which shoppers should consider before making a purchase. A king size is wider, while a California king size is longer. More specifically, a king typically measures 76 inches by 80 inches, compared to a California king’s 72 inches by 84 inches. If you want to have more room to roll over or change positions without disturbing your partner, you may prefer a king size. However, if you or your partner is especially tall, a California king may be more comfortable.

How do you clean a mattress topper?

To avoid damage, mattress toppers should only be cleaned following the manufacturer’s care instructions. Each topper may have different instructions based on its materials. Those that contain memory foam, polyfoam, or latex cannot be washed but can usually be spot cleaned if necessary. Some also have removable, washable covers. Select fiber, wool, feather, and down toppers may be machine-washable depending on their constructions. Using a waterproof mattress protector over your bed can also help prevent dirt and stains.

Written by

Daniel Noyed

author

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