Best Sealy King-Size Mattresses for 2019


Our review process

We've already done all the grunt work researching Sealy king-size mattresses. That way, you don't have to pour over confusing infographics about selecting the right one for you. By reading this article, you'll have an excellent understanding of what types of mattresses are available on the market, so you can confidently purchase a mattress that will ensure comfortable sleep for years to come.

A new mattress is an important purchase, so before you buy a Sealy king-size mattress, make sure to familiarize yourself with Sealy first. Established in 1881, Sealy has been improving sleep quality for years. Having won The Canstar Blue for Most Satisfied Mattress Customers Award for 2017-2018, Sealy is highly regarded by trusted sources. Well-known for manufacturing innerspring, memory foam, and hybrid mattresses, Sealy strives to achieve only the best quality in their products. With the option of buying mattresses in stores or online, Sealy offers you the best of both worlds, whether you like shopping from the comfort of your home or prefer testing the options out yourself. Sealy designs various types of mattresses, giving you the opportunity to find excellent quality products without feeling limited by your choices. Sealy sells decently priced mattresses and manufactures mattresses with various firmness levels, so you can pick the option you find most comfortable based on your favorite sleeping position. With high-quality materials in all their products, Sealy manufactures mattresses that will last many years. Having received a score of A+ from the Better Business Bureau, Sealy has been highly rated for customer satisfaction, product quality, and transparent marketing. Sealy uses sustainable materials, providing you an excellent night's sleep without sacrificing your health or negatively impacting the environment. Sealy uses patented materials and takes part in clinical research, reassuring consumers that their mattresses actually do provide improved support and sleep quality.

These mattresses are ideal for couples, offering extra space for you to spread out. They measure 76" X 80" and are ideal for master bedrooms. However, king-size mattresses are not suitable for small spaces, so if you live in a small house or apartment, you might want to consider a smaller bed. Also, they are large and heavy, making them hard to move and flip.

Best Overall Score
An image of Sealy Plush Memory Foam King-Size DuraFlex Edge System SealyCushion Foam 11.5-Inch Mattress

For a good night's sleep and endless comfort, opt for a Sealy Plush Memory Foam King-Size Mattress. With a plush comfort level, this Sealy mattress is perfect for people who love extra softness. It is made with an edge support system, adding resistance around the edges of the mattress. Featuring an 11.5-inch thickness, this Sealy mattress will stay in good shape and not sink in even after prolonged use. Available in a king-size, it ensures that you'll have lots of space to spread out and sleep comfortably.

Designed with a memory foam construction, this Sealy mattress allows you to toss and turn and then re-contours to your body after you've settled. It features a knitted cover, keeping its shape for easy care. It minimizes motion transfer, which gives for uninterrupted sleep, especially if you share your bed with a partner. This thick mattress has SealyCool gel memory foam, providing necessary support to your neck and back. It features SealyCushion foam.

    Pros
    • Plush mattress for ultimate softness and comfort
    • Reduces motion transfer, making it ideal for restless sleepers
    • Supportive design ensures proper spinal support and alignment
    Cons
    • King-size can be difficult to move
    • Plush mattress can get lumpy or sag over time
    • 11.5-inch thickness may tend to appear bulky in some bed frames
Runner Up
An image of Sealy Firm Hybrid King-Size Response Pro HD Zoned Coil System Foam Base 13.5-Inch Mattress

For optimal comfort and a good night's sleep, select the Sealy Firm Hybrid King-Size Mattress. Available in a king-size, this Sealy mattress offers an ample amount of room to stretch out and relax. It features a 13.5-inch thickness, preventing any structural problems that thinner mattresses can have. This thick mattress features a firm comfort level, giving stronger balance to pressure areas that we tend to strain.

This Sealy mattress features a knitted cover, keeping its shape for easy care. Designed with a hybrid construction, it combines the best features of each different mattress type. Including a foam base, this thick mattress adequately supports all major pressure points of your body. It reduces motion transfer, which allows for uninterrupted rest, especially if you share your bed with a partner. Designed to conform to your body, it can help relieve pressure in sensitive areas of the body.

    Pros
    • Firm mattress will properly align your spine to ensure good posture while sleeping
    • Foam base is designs to give provide superior comfort
    • Conforms to your body for remarkable pressure point relief
    Cons
    • King-size does not fit in small spaces
    • Firm mattress can put painful pressure on pressure points
    • 13.5-inch thickness may tend to appear bulky in some bed frames
For Side Sleepers
An image of Sealy Firm Memory Foam King-Size Responsive 12-Inch Mattress

The Sealy Firm Memory Foam King-Size Mattress is ideal for people who frequently have allergies. This hypoallergenic mattress is available in a king-size, allowing partners to have their own sleeping space. With a firm comfort level, it provides the support necessary for spinal alignment. It has a 12-inch thickness, preventing any structural problems that thinner mattresses often have. It is waterproof, keeping it stain-free and clean by absorbing any fluid. This Sealy mattress is dust mite resistant, protecting you against the factors that can cause allergic reactions. Made with hypoallergenic materials, it ensures a quality night's sleep.

Featuring a memory foam construction, this Sealy mattress accommodates every possible sleeping position. It is designed with a washable cover and features a waterproof cover, making it ideal for children. This Sealy mattress features a responsive foam core, meaning it adjusts to subtle movements, allowing it to contour to your body for optimal support. With exceptional breathability, it promotes airflow to prevent mold and mildew from developing.

    Pros
    • Firm mattress aligns your spine properly to ensure good posture while sleeping
    • Features a responsive foam core, meaning it adjusts to subtle movements, allowing it to contour to your body for optimal support
    • Offers exceptional breathability, promoting the expansion of air, so you remain cool throughout the night
    Cons
    • King-size can be difficult to move
    • Firm mattress can put uncomfortable pressure on pressure points
    • 12-inch thickness may tend to appear too large in some bed frames
Additional Picks
An image of Sealy 51406761 Ultra Plush Hybrid King-Size 14.5-Inch Mattress

The Sealy Ultra Plush Hybrid King-Size Mattress is a great choice for anyone who gets easily overheated at night. This Sealy mattress features a hybrid construction, incorporating the best features of various different mattress types. It conforms to your body for premiere pressure point relief. It minimizes motion transfer, which promotes uninterrupted sleep, especially if you share your bed with a partner.

Available in a king-size, this Sealy mattress ensures that you'll have a generous amount of space to spread out and enjoy a good night's sleep. With a 14.5-inch thickness, it will not fit in all bed frames. It features an ultra plush comfort level, delivering the ideal mix of firmness and softness. This Sealy mattress features a stretch knit weave, keeping your mattress looking newer for longer. Featuring a ventilated design, it provides a constant airflow so sweat, allergens, or dirt do not build-up in your mattress.

    Pros
    • Ultra plush mattress allows for a much softer sleeping surface
    • Designed to conform to your body for exceptional pressure point relief
    • Minimizes motion transfer, making it great for light sleepers
    Cons
    • King-size does not fit in small rooms
    • Ultra plush comfort level can get lumpy or sag over time
    • 14.5-inch thickness can appear bulky in some bed frames
An image of Sealy Plush Hybrid King-Size 19.5-Inch Mattress

Ensuring you don't wake up sweating, the Sealy Plush Hybrid King-Size Mattress is a great option to consider if you get overheated while you're sleeping. Built with durable materials, this Sealy mattress will remain in excellent condition for years to come. It has a plush comfort level, which is an ideal choice for those looking for a soft surface with added cushioning. With a 19.5-inch thickness, it will not fit in all bed frames. Available in a king-size, it ensures that you'll have a generous amount of space to spread out and have a good night's sleep.

This Sealy mattress features a stretch knit weave, keeping your mattress looking newer for longer. With a hybrid construction, it incorporates the best features of various different mattress types. It features pressure point relief technology, which alleviates stress in your joints and muscles. It is designed with low motion transfer, making it an excellent choice for restless sleepers. It features a ventilated design, so it will stay dry in order to prevent mildew and mold from forming.

    Pros
    • Plush mattress for softness and comfort without compromising support and durability
    • Provides pressure point relief, decreasing pain or stiffness while sleeping
    • Reduces motion transfer, making it ideal for light sleepers
    Cons
    • King-size does not fit in compact spaces
    • Plush mattress can become lumpy or sag over time
    • 19.5-inch thickness may look too large in some bed frames
An image of Sealy Plush Hybrid King-Size 23.5-Inch Mattress

Ensuring you don't wake up in a sweat, the Sealy Plush Hybrid King-Size Mattress is a cool option to consider if you tend to get overheated at night. Made with durable materials, this Sealy mattress will stay in excellent condition for years to come. It features a 23.5-inch thickness, resulting in a bulky appearance. Available in a king-size, it ensures that you'll have a generous amount of room to spread out and enjoy a good night's sleep. With a plush comfort level, it is great for people who are looking for extra cushioning, without compromising durability and support.

This Sealy mattress has a stretch knit cover, keeping your mattress looking newer for longer. It has a hybrid construction, which can be heavy and cumbersome to move around. It has a ventilated design, which will improve its health by eliminating mildew and mold from forming. This Sealy mattress offers pressure point relief, so your spine and joints are well supported to diminish any discomfort. It minimizes motion transfer, which promotes undisturbed rest, especially if you share your bed with a partner.

    Pros
    • Plush mattress for ultimate softness and comfort
    • Provides pressure point relief, decreasing pain or stiffness while sleeping
    • Reduces motion transfer, making it ideal for light sleepers
    Cons
    • King-size does not fit in small rooms
    • Plush comfort level can become lumpy or sag over time
    • 23.5-inch thickness may look bulky in some bed frames
An image of Sealy Firm Memory Foam King-Size Foam Base 14-Inch Mattress

For a better night's rest and ultimate comfort, opt for a Sealy Firm Memory Foam King-Size Mattress. Featuring a 14-inch thickness, this Sealy mattress will maintain its shape and form even after prolonged use. It features a firm comfort level, giving stronger balance to pressure areas that we tend to strain. This Sealy mattress is dust mite resistant, making it a suitable choice for those who suffer from allergies. It features a polyester cover, which is strong so it can withstand wear. Available in a king-size, this Sealy mattress ensures that you'll have a lot of space to spread out and have a good night's sleep.

Featuring a memory foam construction, this Sealy mattress allows you to toss and turn and then re-contours to your body after you've found a comfortable position. It includes three layers, so you can enjoy a triple layer support system. Including a foam base, this Sealy mattress adequately supports all major pressure areas of your body. It is designed with antimicrobial fibers, offering you added peace of mind that you will have a healthy bed. With pressure point relief, this Sealy mattress is good for stomach sleepers.

    Pros
    • Firm mattress aligns your spine properly to ensure good posture while sleeping
    • Features a polyester cover, resisting wrinkles and fading over time
    • Foam base is designs to give provide superior comfort
    Cons
    • King-size can be difficult to move
    • Firm mattress can put uncomfortable pressure on pressure points
    • 14-inch thickness can appear bulky in some bed frames
An image of Sealy Luxury Firm Hybrid King-Size 10.5-Inch Mattress

For a combination of comfort and support, choose the Sealy Luxury Firm Hybrid King-Size Mattress and enjoy a restful night's sleep. This Sealy mattress has a 10.5-inch thickness, so it won't sag, sink, or leave body impressions after a long period of time. It is available in a king-size, so you have maximum space to sleep comfortably. It features a luxury firm comfort level, which provides superior support to stop the body from sinking.

This Sealy mattress has a hybrid construction, which combines the best features of various different mattress types. It features pressure point relief technology, which ensures that your spine and joints are equally supported in order to avoid any discomfort. It is designed with low motion transfer, making it an excellent choice for restless sleepers. This thick mattress is suitable to use for standard box springs.

    Pros
    • Luxury firm mattress conforms to the curves of your spine in order to keep your body straight
    • Made with innovative pressure point relief technology for additional spinal and joint support
    • Minimizes motion transfer, making it perfect for light sleepers
    Cons
    • King-size can be difficult to move
    • Luxury firm mattress can put painful pressure on pressure points
    • 10.5-inch thickness may appear disproportional in some bed frames
An image of Sealy 51910161 Plush Hybrid King-Size 14.5-Inch Mattress

The Sealy Plush Hybrid King-Size Mattress is a good choice for anyone who gets very hot during the night. Built with durable materials, this Sealy mattress will remain in excellent condition for years to come. It has a 14.5-inch thickness, meaning it might not fit all bed frames. With a plush comfort level, it is perfect for people who are looking for extra cushioning, without compromising durability and support. Available in a king-size, it will provide maximum bed space.

This Sealy mattress features a stretch knit weave, keeping your mattress looking newer for longer. It is designed with a hybrid construction, combining the best features of each different mattress type. This Sealy mattress conforms to your body for remarkable pressure point relief. It minimizes motion transfer, which promotes a deeper rest, especially if you share your bed with a partner. Featuring a ventilated design, this Sealy mattress increases airflow and controls moisture.

    Pros
    • Plush mattress is an ideal option for those looking for a soft surface with additional cushioning
    • Made to conform to your body for improved support and comfort
    • Reduces motion transfer, making it great for light sleepers
    Cons
    • King-size does not fit in compact rooms
    • Plush comfort level can become lumpy or sag over time
    • 14.5-inch thickness may tend to appear bulky in some bed frames
An image of Sealy Firm Hybrid King-Size Mattress

For a better night's rest and endless comfort, select a Sealy Firm Hybrid King-Size Mattress. Available in a king-size, this Sealy mattress ensures that you'll have a generous amount of room to spread out and have a good night's sleep. With a firm comfort level, it is ideal for those who rest on their back because it offers deeper spinal support. This Sealy mattress features a hybrid construction, incorporating the best features of each different mattress type. It contours to your body, improving its overall support and comfort. It is designed with innovative pressure point relief technology to enhance comfort and alleviate pain.

    Pros
    • Firm mattress aligns your spine properly to reduce back problems
    • Contours to your body for unique support and comfort
    • Provides pressure point relief, making it perfect for stomach sleepers
    Cons
    • King-size does not fit in small rooms
    • Firm mattress can put painful pressure on pressure points
    • Hybrid construction can be heavy and cumbersome to move around or store
Still Need Help Narrowing Down Your Options? Here's Some Additional Information to Consider:
Figure Out Which Mattress Will Best Fit Your Needs
Firm Mattresses

If you want a firm mattress, a Sealy king-size mattress might be a good choice for you. Providing improved circulation, these mattresses promote deeper sleep. They distribute your body weight properly, adequately supporting your joints and other vulnerable areas. These mattresses are ideal for those who usually sleep on their back and have an indentation load deflection ranking of 34-36 pounds. Something to consider is that they can put painful tension on specific pressure points, including the shoulders and hips. On top of that, they may be uncomfortable if you're not used to sleeping on hard surfaces, so it might take a few days to get used to them.

Ultra Plush Mattresses

Are you searching for an ultra plush mattress? Consider a Sealy king-size mattress. Ultra plush mattresses have an additional support, which is great for those who have back problems or joint pain. These contouring support mattresses adjust to your body shape for optimal comfort. They are suitable for individuals who tend to sleep on their sides and have a 14-19 pound indentation load deflection rating. Something to keep in mind is that they may be problematic if different sleepers will be using the bed, causing the surface to sink if there is a significant weight difference. In addition, they are more likely to become a bit lumpy or sink in over time, so your body won't be properly supported when sleeping.

Luxury Firm Mattresses

Are you searching for a luxury firm mattress? Consider a Sealy king-size mattress. Luxury firm mattresses have an indentation load deflection rating of 29-31 pounds and are ideal for individuals who usually move from their back to sides when sleeping. They distribute your weight properly, which prevents pressure by balancing your body without having your back or joints sink. They are ideal for couples where one individual who prefers to sleep on their side and the other on their back or stomach. However, less supportive mattresses provide insufficient pressure point relief while sleeping which may lead to a sore hip. Additionally, luxury firm mattresses are less durable than memory foam mattresses, lasting between 7-10 years at most.

Different Kinds of Sealy King-Size Mattresses Available
Hybrid Mattresses

If you're thinking about getting a hybrid mattress, this Sealy king-size mattress might be a good choice for you. These mattresses feature pressure-point relief, helping to ease soreness in your joints, so you will wake up feeling refreshed. They ensure even weight distribution, adequately supporting your body. They have various kinds of coils, so you can choose between plush to firm comfort. They are made from various materials, giving you a wide range of foam densities to choose from. Designed to help you control a comfortable body temperature, they are designed to dissipate heat instead of absorb it, so you can stay cool all night. However, hybrid mattresses are expensive, so if you're looking for a more affordable mattress, you should consider something else.

Memory Foam Mattresses

If you want a memory foam mattress, this Sealy king-size mattress could be a good choice for you. These mattresses feature pressure-point relief, helping to ease soreness in your joints, so you will wake up feeling refreshed. Designed with various foam types, they offer just the correct amount of cushion you need. They offer superior motion isolation technology, which will make sure your partner doesn't wake you when they move during the night, unlike traditional spring mattresses. One downside is that these mattresses can smell a bit like chemicals initially, so you should air them out for at least 24 hours before adding sheets. Additionally, they aren't waterproof, so you'll have to be careful and make sure that they don't come into contact with too much moisture.

Innerspring Mattresses

If you're thinking about getting an innerspring mattress, this Sealy king-size mattress could be a good choice for you. Designed with firm edges, these mattresses will maintain their level surface for ideal support over time. They feature a breathable design, ensuring proper ventilation for an extended lifespan. Designed to keep you cool all night and enhance your sleep quality, they are designed to dissipate heat instead of absorb it, so you can stay cool when you sleep. They are made with different kinds of coils, so you can choose what's right for you depending on your needs. Innerspring mattresses are made from various materials, giving you a range of foam densities to choose from. However, they don't contour to your body, so many people feel like they're too firm. On top of that, they have poor motion isolation, so they aren't ideal for light sleepers, especially if you are sharing your bed.

Mattress Thickness: What to Know Before You Decide on Your Sealy King-Size Mattress
8-10 Inch Mattresses

Looking for a Sealy king-size mattress that's not too thick or thin? There are four for you to take a look at. These mattresses are standard size, so you can rest assured knowing that they'll be able to fit in nearly all bed frames. They are less likely to cave in, ensuring that you sleep in the proper posture to prevent joint pain. They are suitable to use with standard-size sheets, so it will be easy to find linens that fit. Something to keep in mind is that they wear out quickly, so you will have to replace them more often. Additionally, they provide less support than other types of mattresses, so if you are prone to back or joint pain, then you should look for a thicker mattress. You can take a look at this comfortable Sealy king-size mattress if a mattress with 8-10 inch thickness is what you need.

10-12 Inch Mattresses

There are only two Sealy king-size mattresses with a thickness of 10-12 inches. These mattresses are suitable to use with standard-size sheets, which ensures you will never have problems finding sheets that fit. They feature a standard thickness, so you can rest assured knowing that they'll fit in nearly all bed frames. These mattresses are less likely to sag, so the surface will remain level to ensure proper support over time. They have a solid construction, so they can sustain more weight than other kinds of mattresses. Something to keep in mind is that they are higher off the ground, so getting into and out of bed is harder than it would be with a mattress that is thinner. You can take a look at this Sealy king-size mattress if a mattress with 10-12 inch thickness is what you're looking for.

12-14 Inch Mattresses

If you're looking for a comfortable and supportive Sealy king-size mattress, you might want to think about getting a 12-14 inch mattress. These mattresses have a solid build, making them more durable and able to sustain more weight. Less likely to cave in, they will provide proper support while sleeping. These 12-14 inch mattresses are suitable to use with standard-size sheets, so it will be easy to find linens that fit. A potential downside is that they provide poor temperature control, so if you get hot at night, you might want to consider a thinner mattress with better temperature control. If you think a 12-14 inch mattress is a good choice, here's one to take a look at.