This is why we decided to round up the best king-size mattresses that are great for couples.
Read on to find the best mattress for you and your partner.
Our Editor’s Best King Size Mattresses For Couples Reviews
Novilla King Size Mattress, 12 inch Gel Memory Foam King Mattress for a Cool Sleep & Pressure Relief, Medium Firm Feel with Motion Isolating, Bliss

Key Features:
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The mattress is composed of four different foam layers, including gel memory foam, to distribute pressure and mold to the sleeper’s body. The two layers of high-density foam improve durability and support proper spinal alignment. The mattress is also designed to resist sagging and prevent roll-off.
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The king size mattresses for couples is a mattress that is made of CertiPUR-US Certified foam and is covered with skin-friendly rayon fabric. The mattress is designed to provide a safe and comfortable sleep environment for couples.
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A king size mattress in a box that fits all bed frames and is easy to set up. The mattress is recommended to be set up for 72 hours before use to allow for any air to escape and for the mattress to reshape.
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This king size mattress is perfect for couples who want to have a comfortable and luxurious experience. The mattress comes with a free trial so that you can test it out for yourself and see if it’s the right fit for you. The mattress is also covered by a 10-year protection plan so that you can have peace of mind knowing that your investment is protected.
Casper Sleep Original Foam Mattress, King

Key Features:
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A king size mattress for couples that is made of memory foam and will expand to full size over the course of 24 to 72 hours.
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The king size mattresses for couples is a mattress that is designed to provide a comfortable and supportive night’s sleep for couples. The mattress is made of a proprietary combination of materials that are designed to provide a comfortable and supportive night’s sleep. The mattress is 11 inches thick and is made of foam that weighs 101 pounds. The mattress is 76 inches wide and 80 inches long.
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A king size mattress for couples that has softer foam around the shoulders for more relief and a firmer foam under the hips, waist, and lower back to help align your spine. For cooling, a top layer of perforated breathable foam helps reduce heat. Tiny holes move hot air and body heat away.
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This mattress is perfect for couples because it is a king size. The CertiPUR-US program certifies the foams, which means they are made without ozone-depleting chemicals. They are also regulated by the Consumer Product Safety Commission. The mattress has low VOC emissions for indoor air quality, which is less than 0.5 parts per million.
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If you’re looking for a king size mattress for couples, the Casper Original Foam 2020 mattress might be a good option for you. It comes with a 100 night trial, so you can try it out at home and return it for free if you’re not satisfied. There’s also a 100 day return policy if you buy the mattress from Casper, so you can be sure you’re making a good investment.
OlarHike Inflatable King Air Mattress with Built in Pump,18″Elevated Durable Air Mattresses for Camping,Home&Guests,Fast&Easy Inflation/Deflation Airbed,Black Family Blow up Bed,Travel Cushion,Indoor

Key Features:
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The Ultra-Comfort king size air mattress is a deep, inflatable mattress with a built-in electric air pump, designed to provide maximum support and comfort for couples.
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This is a king size mattress that is perfect for couples. It has enhanced air coil support that provides relaxation to adults and durability for kids. The weight distribution is even and secure from head to toe across the entire surface.
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If you are looking for a king size mattress that will provide support and prevent air leaks, this is a great option. The custom air coil design and reinforced stitching will keep you comfortable and supported throughout the night.
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A king size mattress for couples that is large and comfortable with a quick fold down feature and a carry storage travel bag for easy storage and transport.
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This king size mattresses for couples is made with a built-in pump and waterproof material, so it can be used indoors or outdoors. It has a soft flocked top and durable seams, making it perfect for any adventure.
SafeRest Mattress Protector – King – College Dorm Room, New Home, First Apartment Essentials – Cotton, Waterproof Mattress Cover Protector and Encasement

Key Features:
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This is a king size mattress protector that is designed to protect against fluids, urine, and perspiration. It is made from a waterproof material and has a fitted design for easy installation.
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This is a king size mattress for couples that features a premium cotton terry surface with a membrane back coating. The coating is waterproof, noiseless, and breathable, making it an ideal choice for couples who want a comfortable and durable mattress.
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If you’re looking for a king size mattress that’s great for couples with kids or pets, this is the one for you. It’s OEKO-TEX certified, so you can be sure it’s free of harmful chemicals, and it has a 151792 certification, which means it’s been tested for durability.
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King size mattresses for couples are designed to provide a comfortable sleeping experience for couples. They are typically made from high-quality materials and feature a variety of features that are designed to provide comfort and support.
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If you are looking for a king size mattress protector that will fit a mattress up to 18 inches deep, this fitted sheet style design is a great option. The 76″ x 80″ size will fit most king size mattresses, and the fitted sheet style design means that it will stay in place even if you move around a lot in your sleep.
Signature Design by Ashley Chime 12 Inch Medium Firm Memory Foam Mattress, CertiPUR-US Certified, King

Key Features:
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A Memory foam mattress for couples that provides support, pressure relief, and comfort. It may take up to 72 hours for the mattress to regain its full shape. Expansion time will vary depending on the temperature of the room.
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This is a king size mattress for couples that is 12 inches thick. It is designed with layers of memory foam for support and pressure relief. The support foam core reduces motion transfer for peaceful, undisturbed sleep.
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This mattress is perfect for couples because it is a king size and has plush support. The memory foam contours to your body and delivers amazing support, pressure relief and comfort for all types of sleepers.
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This is a king size mattress that is 75 inches wide, 79 inches deep, and 12 inches tall. It is compatible with most king bed frames and can be used with a bed foundation, box spring, or frame (sold separately).
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A king size mattress for couples that is ready to be enjoyed as soon as it arrives. It comes in a box and can be easily unboxed, cut open, and unrolled for immediate use.
Mellanni King Size Sheet Set – Hotel Luxury 1800 Bedding Sheets & Pillowcases – Extra Soft Cooling Bed Sheets – Deep Pocket up to 16″ Mattress – Wrinkle, Fade, Stain Resistant – 4 Piece (King, White)

Key Features:
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These are king size mattresses that are designed for couples. They are made from a silky soft material that is designed to be comfortable and luxurious. They are also machine washable and can be tumble dried.
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This set of king size bed sheets is luxurious, with a flat sheet measuring 102″x105″, a fitted sheet measuring 78″x80″, and two pillowcases measuring 20″x40″. The fitted sheet has deep pockets and is elasticized all around, not just at the corners, to ensure a snug fit on mattresses up to 16″ thick.
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This is a king size mattress that is perfect for couples. It is made from a material that is fade, stain, shrink and wrinkle resistant. You can machine wash it in cold water and it will dry quickly on a tumble dry low setting. This mattress is more durable than a cotton mattress.
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This is a king size mattress for couples that is made of high quality microfiber and is available in a variety of colors.
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If you are looking for a king size mattress for couples that comes with a lifetime promise, then the Mellanni mattress is a great option. With this mattress, you will be able to return it at any point and for any reason if you are not satisfied with your purchase.
EnerPlex King Air Mattress with Built-in Pump – 18 Inch Double Height Inflatable Mattress for Camping, Home & Portable Travel – Durable Blow Up Bed with Dual Pump – Easy to Inflate/Quick Set Up

Key Features:
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This is a versatile mattress that can be used as a floor mattress, portable bed, or camping mattress. It is made of premium, waterproof material and is perfect for couples.
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This is a king size air mattress with a built in pump for couples. It can inflate in under 2 minutes and can be used with a portable battery pack or car outlet adapter.
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This is a high-quality king size mattress that is designed to be puncture-resistant and has a non-slip stability. It is great for indoor or outdoor use.
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This is a king size air mattress for couples that is durable and has a coil beam construction. It is perfect for a comfy cat nap.
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This is an adjustable king size mattress that is perfect for couples. It has a built-in, fastest inflating pump that allows you to inflate or deflate the mattress to your desired comfort level.
EASELAND King Size Mattress Pad Pillow Top Mattress Cover Quilted Fitted Mattress Protector Cotton Top 8-21″ Deep Pocket Cooling Mattress Topper (78×80 Inches, White)

Key Features:
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A king size mattress pad that is 78×80 inches with a 21 inch deep pocket. It is made of 63 oz elastic and hollow down alternative microfiber.
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This pad is designed to add softness to a firm mattress. It is filled with 30oz of down alternative material.
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If you’re looking for a skin-friendly and breathable king size mattress for couples, this one is filled with down alternative fillings and has a 300TC cotton surface.
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This is a fitted sheet style king size mattress for couples that is designed to stay in place no matter how you move on the bed. It is made with a deep pocket design and 130GSM Single-track Elastic Fabric that will easily stretch up to 21 inches. This mattress pad will keep your bed looking neat all night long.
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A king size mattress for couples that is machine washable and can be dried under the sunshine.
Amazon Basics Ultra-Soft Micromink Sherpa Comforter Bed Set – Charcoal, King

Key Features:
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This is a king-size bed set that includes a comforter and 2 king pillow shams. The comforter is 104 by 90 inches and the pillow shams are 20 by 36 inches.
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The king size mattresses for couples is a reversible design with micromink polyester on one side and white faux Sherpa fleece on the reverse. Both sides offer supreme softness and cozy warmth for any season.
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The mattress is made of polyester and is filled with a down-alternative material. It is reinforced with box stitching to prevent the filling from shifting.
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This is a king size mattress for couples that has been certified by the OEKO-TEX Standard 100. This certification means that the mattress has been made in a factory that meets high safety and environmental standards.
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This is a machine-washable and tumble-dryable king size mattress for couples, made without bleach.
Rightline Gear Range Jr Weatherproof Rooftop Cargo Carrier for Top of Vehicle, Attaches With or Without Roof Rack, 10 Cubic Feet, Black

Key Features:
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A king size mattresses for couples is a mattresses sized to fit two people comfortably. It is typically wider than a queen size mattresses, and often has a higher thread count for a more luxurious feel.
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This king size mattress is designed for couples who want to keep their gear dry while they sleep. It features welded seams, an urethane-coated zipper, and a hook-and-loop-close zipper flap.
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If you’re looking for a reliable and durable cargo carrier to keep your belongings dry on your next road trip, this king size mattresses for couples is a great option. Made of UV-protected PVC semi-coated mesh, it’s designed to withstand the elements and keep your belongings secure.
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A king size mattress for couples that is easy to set up by attaching the straps to a roof rack or using the included car clips to attach the straps to the door frame weather molding.
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This rooftop cargo bag is perfect for couples who want to hit the open road! The bag folds down for easy storage in the included stuff sack, and comes with 4 attachment straps, 4 car clips, and a stuff sack with sewn-in setup guide.
King Size Mattresses For Couples FAQs
1. What are the dimensions of a king size mattress?
The dimensions of a king size mattress are 76 inches wide by 80 inches long.
2. How much does a king size mattress weigh?
A king size mattress weighs about 80-85 pounds.
3. How much does a king size mattress cost?
A king size mattress can cost anywhere from $500 to over $4000.
4. What is the difference between a king size mattress and a queen size mattress?
King size mattresses are wider than queen size mattresses.
5. What are the benefits of a king size mattress for couples?
Some benefits of a king size mattress for couples are that it provides each person with plenty of personal space, it can help reduce tossing and turning at night, and it can make it easier to get in and out of bed.
Conclusion
There are many great king size mattresses for couples on the market. Our list of the best king size mattresses for couples will help you save time researching and choosing the best one for you.