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Best Oversized Mattresses:
Top Picks Beyond Standard Sizes for Extra Bed Space

UPDATED

Written by Alison Deshong

Reviewed by Dr. Michael Breus

Expert Tested

Table of Contents

No matter who’s sharing your bed, every person and furry friend needs enough room to stretch out and change sleep positions without disturbing their fellow co-sleepers. Though oversized mattresses are not as common as standard mattress sizes, they make bedtime much more comfortable for anyone co-sleeping with multiple people and pets.

Giant mattresses can range from a few inches to a few feet larger than a king or California king size bed. Although they’re helpful for co-sleepers, oversized beds can be harder to find and harder to set up. We’ll help you choose the best oversized mattress for your needs and provide tips on how to maneuver and care for a giant bed.

Sleep Doctor’s Picks

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Best Overall Mattress

Ace Collection Mattresses

Dr. Michael BreusReviewer Picture

The Sleep Doctor’s Review

Ace Collection mattresses are available in three proprietary sizes, each of which offers a larger-than-average surface to meet your needs. You can choose from multiple hybrid designs and firmness levels to further customize your sleep space.

Buy from the Ace Collection
Ideal For:

Combination Sleepers

Firmness:

Soft, Medium Firm Options

Surface Usage:

Edges Sink a Bit

Value:

Good Value

Pros

  • Foam comfort system contours to the body to relieve pressure
  • Breathable bamboo-derived viscose cover
  • Pillow-top is made with gel-infused foam for cooling

Cons

  • No options for those seeking a firm to extra firm mattress
  • Price range for available models is somewhat expensive

The Ace Collection specializes in mattresses to suit tall people, adults who sometimes share their sleep space with children or pets, and those with sleep habits that require a longer or wider sleep surface. Demand for non-traditional mattress sizes led the company to create three innovative proprietary sizes: Ace Size, Player Size, and Family Size.

Why We Like It

The Ace Size measures 108 inches wide, best suited for co-sleepers looking to maximize their sleep surface. You can also choose the Player Size, which is 108 inches long, ensuring ample space for most people regardless of their height. The Ace Size’s length and Player Size’s width both measure 80 inches, allowing either mattress to fit through any standard doorway despite the oversized dimensions. The company’s largest option, the family size, measures 144 inches wide and 80 inches long. You can choose from four designs for the mattress: regular, pillow-top, premium cotton, and premium natural. The regular model features a breathable bamboo-derived cover and polyfoam comfort system over robust pocketed coils composed of U.S.-made steel. The pillow-top shares the same general construction but adds gel-infused polyfoam sewn into a pillow-top cover for enhanced cooling and pressure relief.

How Does It Feel?

You can also opt for the premium cotton or premium natural models, both of which hold a higher price-point and are available for custom order. The cotton model is made of American steel coils that are inner tufted, and topped with a plush latex tufted topper. This option also comes in all natural for those looking for a hypoallergenic option. In addition, the mattress comes in two firmness levels: soft (3) and medium firm (6). The foam comfort systems in the regular and pillow-top models appealed to our side sleepers, who enjoyed the generous cushioning. Meanwhile, side sleepers who weigh at least 130 pounds, as well as back and stomach sleepers weighing up to 230 pounds, enjoyed the two premium models. Regardless of mattress type, we recommend opting for the softer design if you weigh less than 130 pounds and the medium firm if you weigh up to 230 pounds. Side sleepers weighing more than 230 pounds also enjoyed the medium firm, but back and stomach sleepers with this body type may need a firmer mattress.

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Best Value Mattress

Big Mattress Co. Oversized Mattresses

Dr. Michael BreusReviewer Picture

The Sleep Doctor’s Review

Big Mattress Co. offers a wide selection of oversized models, many of which carry approachable price-points if you’re shopping on a budget. You can choose an all-foam model that cushions the body closely, or an airbed with adjustable firmness levels, and six different sizes are available.

Buy from Big Mattress Co.
Ideal For:

Budget Shoppers

Firmness:

Medium, Medium Firm Options

Surface Usage:

Edges Sink a Bit

Value:

Great Value

Pros

  • Six sizes to choose from
  • All-foam and airbed models available
  • 100-night sleep trial with free returns

Cons

  • Larger sizes may be difficult to move from room to room
  • Limited firmness options for all-foam models

Big Mattress Co. offers one of the largest selections of oversized beds. The company’s lineup includes six oversized options: Alaskan king, Texas king, Vermont king, Wyoming king, family, and the extra wide family XL. With reasonable prices on their large beds and generous customer service policies, Big Mattress Co. mattresses represent an excellent value for oversized bed shoppers.

Why We Like It

Big Mattress Co. offers two mattress models: the 11-inch Big Mattress Classic and the 13-inch Big Mattress Premier. The all-foam version of the Classic has a medium firm (6) feel, while the foam Premier has a medium (5) firmness level. Both the Classic and Premier are available in airbed versions. While the company refers to them as hybrid options, they feature inflatable air pods that let owners control the firmness level via a dial on the side of the bed.

How Does It Feel?

Our testers noted that both models are fairly versatile, providing a balance of pressure relief and support. Additionally, they observed that the polyfoam comfort system works to stifle motion and sound so co-sleepers don’t disturb one another during the night.

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Best Adjustable Mattress

Mattress Insider Alaskan King Mattress

Dr. Michael BreusReviewer Picture

The Sleep Doctor’s Review

The flippable Mattress Insider Alaska King is cushioned with plush memory foam on one side and responsive Talalay latex on the other. Foam-encased coils form a sturdy support system, while an organic cotton cover promotes breathability and cooling on the surface.

Buy from Mattress Insider
Ideal For:

Hot Sleepers

Firmness:

Medium Soft, Medium, Medium Firm, Firm, Firm Options

Surface Usage:

Full Surface

Value:

Fair Value

Pros

  • Highly durable hybrid construction
  • Customizable firmness
  • Reinforced perimeter offers very good edge support

Cons

  • Available in a single size with a fairly expensive price-point
  • Disassembling the mattress to flip can be a time-consuming process

With its hybrid construction and customizable firmness, the Mattress Insider Alaskan King Mattress is one of the most versatile and durable oversized models available. The square Alaskan king size measures 108 inches in each direction, offering plenty of space for multiple co-sleepers and pets.

Why We Like It

Sitting at 13.5 inches thick, the Mattress Insider Alaskan King Mattress features a flippable and modular design that lets you fine-tune the feel of the bed. The comfort system consists of 2 inches of gel-infused memory foam and a 2-inch layer of Talalay latex. Our testing team found that it offers a nice balance between moderate contouring and responsiveness. The memory foam side has a plush 1-inch quilted cotton cover, while the latex side features the same organic cotton but without the added quilting. Beneath the comfort system sits a 1.5-inch transitional polyfoam layer followed by 6 inches of foam-encased pocketed coils. We found that the coiled core offered very good support all the way to the edge of the mattress. A final quarter-inch layer of dense support polyfoam provides added stability and support to the mattress.

How Does It Feel?

The comfort system is flippable, letting sleepers choose between the plusher feel of the memory foam layer or the firmer and more responsive latex layer. The firmness level can be further customized by flipping the support core and having either the firm transitional polyfoam or extra firm base layer on top. The mattress’ zippered design ensures that the sections stay in place. Alternatively, you can choose to forgo the support core altogether and just place the comfort system on a flat surface. Sleepers who like their mattress firm or extremely firm can omit the comfort system and sleep on either side of the support core. However, shoppers should note that the support core is shipped in two sections that must be zipped together, so there will be a small gap between the two sides. Additionally, you cannot order just the comfort system or the support core, so you should account for appropriate storage space if you don’t plan on using one of them.

Why You Should Trust Us

At SleepDoctor.com, our goal is to help readers make informed decisions to improve their sleep. Our team performs rigorous in-house testing on every product we feature in our reviews. The Sleep Doctor testing team includes a wide range of body types and sleep preferences for a diversity of opinions. We regularly update our product recommendations to account for new releases, testing results, and insights.

What Is an Oversized Mattress?

An oversized mattress refers to any bed that’s bigger than a king or California king, which are the largest standard mattress sizes. King mattresses measure 76 inches wide by 80 inches long, while California king beds are 72 inches wide by 84 inches long.

Some of the most common oversized options are square. These include the Wyoming king, Vermont king (which has the same dimensions as the Alberta king), and Alaskan king. A Texas king mattress is significantly longer than it is wide. Meanwhile, the family XL size has the same length as a California king but measures a whopping 144 inches in width.

Common Size Options for Oversized Mattresses

Wyoming King
Texas King
Vermont King
Alaskan King

Dimensions

84″ x 84″

80″ x 98″

96″ x 96″

108″ x 108″

Where Can You Buy an Oversized mattress?

Oversized mattresses may be hard to find in many brick-and-mortar mattress shops but are available to buy online. Most in-person retailers only stock standard mattress sizes in their showrooms, since oversized mattresses are not as popular and take up a large amount of floor space.

How Much Does an Oversized Mattress Cost?

Oversized mattress prices vary widely depending on the size, mattress type, and brand, with lower-end models starting at $1,500 and luxury options approaching $10,000. The cost of special bedding and bed frames can also add to the final price.

How Easily Can You Find Sheets and Bed Frames for These Mattresses?

Oversized mattresses are a niche product, making it harder to find sleep accessories like bedding and bed frames. However, many retailers that offer oversized mattresses also make accessories to go along with their larger mattress sizes.

For more options, shoppers can try searching online to find other retailers selling oversized sleep accessories. A properly sized fitted sheet is the most important piece. While other custom bedding is available, sleepers can also use multiple standard top sheets, blankets, and comforters on an oversized mattress.

Oversized Mattress Types

Like standard mattresses, there are different types of oversized mattresses. Each mattress type uses a different combination of materials with a unique feel and performance. For an oversized mattress, it’s especially important that all of the bed’s sleepers feel comfortable and supported.

Hybrid Mattresses

Hybrid mattresses typically combine a thick foam comfort system with a pocketed coil support core. This combination gives hybrids the soft, contouring feel of a foam mattress with the resilient bounce of a traditional innerspring.

The coiled support core construction also provides superior durability. As a result, hybrid beds tend to last longer than many all-foam models.

Foam Mattresses

Foam beds are made entirely from foam layers, typically polyfoam or memory foam. The feel and performance of different foam formulations can vary substantially.

Memory foam mattresses feature a memory foam comfort system with a denser polyfoam support core. They tend to provide excellent contouring and pressure relief. Beds with a polyfoam comfort system can offer a wider range of firmness levels with a springier feel than memory foam.

A foam model can be an excellent choice for those planning to share their oversized bed with several sleepers and pets. This is because foam mattresses tend to be nearly silent with minimal motion transfer, meaning the movement of one sleeper is less likely to disturb others sharing the bed.

Innerspring Mattresses

Innerspring mattresses feature a thick support core of metal coils, a fabric cover, and minimal cushioning. With the industry moving toward foam and hybrid models, traditional innerspring beds are largely a relic of the past. However, some mattress makers use the terms innerspring and hybrid interchangeably.

When researching oversized mattresses, it’s important to understand the construction of each model. Side sleepers should be especially careful to ensure that any bed with springs provides adequate cushioning for their hips and shoulders.

What Do You Need From an Oversized Mattress?

An oversized mattress should provide the right level of support and cushioning for each sleeper’s body type and sleep style. A larger mattress should also have ample height and edge support to make it easy to get in and out of bed.

Description

Mattress Thickness and Overall Height

The thickness of the mattress combined with the bed frame and foundation determine the overall bed height. A higher bed allows for more storage underneath. Sleepers who have trouble getting in and out of bed usually prefer a higher sleep surface.

Edge Support

Edge support refers to how well a bed supports your weight at its outer edges. Strong edge support makes it easier to get in and out of bed, which is important for sleepers with reduced mobility. Hybrids or foam beds with reinforced edges typically have the best edge support.

Contouring and Pressure Relief

The top comfort layers of your mattress provide cradling comfort to the curves of your body. The comfort system also helps relieve pressure from key areas like the hips and shoulders.

Remember to look at more than the dimensions when shopping for an oversized mattress. It’s important to make sure that the bed provides ample pressure relief, especially for side sleepers and people with back pain.

Firmness and Feel

Firmness describes how hard or soft a mattress feels on a scale from 1 to 10, with 10 being the firmest. Optimal firmness depends on several factors, including your body weight, preferred sleep position, and personal comfort preferences.

It’s important for co-sleepers to find a firmness level that works well for everyone. However, co-sleeping families may want to consider the needs of the adults more so than growing children.

Oversized Mattress Setup and Care

Setting up an oversized mattress requires more planning than a standard mattress. First, you’ll need to take measurements in your bedroom to confirm an oversized bed will fit in your sleep space.

After you place your order, you may need to take additional steps to prepare for delivery. Clear any clutter or bulky items in the path from your front door to your bedroom, and take measurements of your doorways and hallways to ensure there’s enough room to maneuver the mattress.

Consider the Mattress Weight, Mattress Type, and Movability

An oversized mattress can weigh upward of 200 pounds or more. With this in mind, you may want to recruit multiple people to help you transport the bed from your door to your bedroom. Some manufacturers ship their oversized beds in multiple pieces, which can make it easier to maneuver.

When your new mattress arrives, try to place the shipping box as close to your bed frame as possible before unboxing. Keep in mind that foam mattresses don’t hold their shape as well as hybrids or innersprings and may be more cumbersome to move after unboxing.

Proper Care for Your Giant Mattress

Mattress cleaning and care steps are the same for standard and oversized mattresses. However, you may need an extra pair of hands to make rotating the bed and changing the sheets a bit easier.

Most importantly, try to spot-clean spills right away to prevent stains from setting in. And consider searching for an oversized mattress protector to further protect and extend the life of your giant mattress.

About The Author

Alison Deshong

Staff Writer, Product Testing Team


Alison is a health writer with ample experience reading and interpreting academic, peer-reviewed research. Based in San Diego, she is published in the journal PLOS Genetics and the Journal of Biological Chemistry and has been a copywriter for SmartBug media. With a master’s degree in biochemistry from the University of California, Davis, she has nearly a decade of academic research experience in life sciences. She enjoys helping people cut through the noise to understand the bigger picture about sleep and health. Alison likes to stay active with rock climbing, hiking, and walking her dog.

  • POSITION: Stomach Sleeper
  • TEMPERATURE: Neutral Sleeper
  • CHRONOTYPE: Bear

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