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5 Best Mattresses King Sizes of 2025

Last Updated - 2025/08/31

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

BedStory

BedStory King Mattress 12 Inch - Memory Foam Hybrid Innerspring Mattress King Size - Sleep Cooler & Pain Relief & Hypoallergenic Bed in a Box - Premium Gel Foam Matelas - CertiPUR-US Certified

BedStory

CA$499.99

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Main highlights
- Undisturbed Deep Sleep – When one person moves or shifts position on the bed, the motion-isolating pocket springs respond only to that specific movement and minimize movement transfer across the bed. So you and your partner can sleep soundly—even if one of you moves during the night.
- Skin-Friendly & Durable Cover – Made from breathable, hypoallergenic knitted fabric, the mattress cover is soft to the touch and gentle on sensitive skin. The anti-slip bottom keeps it securely in place for lasting stability.
- Pain Relief & Targeted Support – The individually wrapped coils adjust to your body’s curves and weight, relieving pressure from key areas like shoulders, hips, and lower back. Wake up refreshed with less tossing and turning.
- Mattress in a Box - This hybrid mattress arrives in a box for quick and easy setup. Simply unbox, unroll, and allow the mattress to expand to its full size within 3 days. Perfect for busy households or apartment living.
- Comfortable & Supportive – Engineered with a plush gel memory foam top layer, high-resilience high-density foam, and a firm individually wrapped coil system, BedStory 12-inch hybrid mattress offers exceptional support and contouring comfort. Ideal for all sleep positions, especially back and side sleepers.
CA$499.99
2

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

SEZMOONSI

12 Inch King Hybrid Mattress in a Box, Medium Firm Gel Memory Foam Innerspring King Size Mattress, Fiberglass-Free, CertiPUR-US Certified, Motion Isolation Mattresses for Pressure Relief

SEZMOONSI

CA$436.99

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Main highlights
- Orthopaedic Comfort king Mattress: SEZMOONSI 30cm Thickness king mattress features an enhanced 7-zone independent pocket internal spring ergonomic design to provide you with orthopaedic level support, promoting proper spinal alignment and relieving pressure for a refresh sleep for back, side, and stomach sleepers
- Medium Firmness and Enhanced Edge Support: Enjoy a medium-firm king bed mattress with independent pocket springs that offer excellent motion isolation. Each spring works independently to contour to your body's shape, relieving pressure and reducing disturbances from your partner's movements. Reinforced edges with harder springs prevent sagging, even during prolonged sitting
- Friendly to Skin and Breathable: The king mattress features a breathable surface that allows for proper airflow.The skin-friendly design provides a soft and smooth touch, creating a comfortable sleeping environment. Hypoallergenic and suitable for sensitive individuals, including babies
- Certified High-quality Material: The king memory foam mattress is meticulously crafted from CertiPUR-US and OEKO-TEX Certified high-quality materials, ensuring excellent durability performance, superior support and comfort for years to come. Enjoy a hassle-free 100-night trial for confidence
- Buy with confident: The mattres is compressed and rolled and packed in an easy-to-carry box, reducing packaging and beneficial to the environment. Please wait 24-72 hours for fully recover after unpacking. Considering that you need time to get used to your new mattress, we offer a 100-day free trial. Any questions about the use of the mattress, please let us know directly
CA$436.99
3

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Zinus

Zinus King Mattress - 10 Inch Green Tea Cooling Gel Memory Foam Mattress, Pressure Relief, for Cool Sleep, CertiPUR-US Certified Foam, Mattress in a Box, 10-Year Warranty, King Size

Zinus

CA$345.00

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Main highlights
- WORRY-FREE WARRANTY – A 10-year limited warranty is included with the mattress; please allow 24–72 hours for your mattress to expand to its original shape
- REJUVENATING SUPPORT – Pressure-relieving memory foam conforms to the shape of your body to enhance circulation and decrease stress on your joints, and is infused with cooling gel for ultimate temperature regulation
- COOLER SLEEP AND A CLEANER PLANET – Topped with soothing gel memory foam, this mattress is designed to help keep you cool and comfortable throughout the night, and ships in a new smaller box to support a reduced carbon footprint
- CERTIFIED SAFE MATERIALS – Crafted from high-quality CertiPUR-US certified foam and wrapped with an OEKO-TEX certified mattress cover all produced without the use of harmful chemicals for safer, healthier sleep
- ALL NIGHT FRESHNESS - The all-natural green tea and purified charcoal infusions work together to help keep your mattress fresh for many nights to come
CA$345.00
4

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

KYSHANN

Kyshann King Mattress,12 inch Memory Foam Individual Pocket Spring Mattresses,Motion lsolation,EdgeSupport,Zoned Pressure Relief,Fiberglass Free,Medium Firm,King Size Mattress in A Box

KYSHANN

CA$349.99

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Main highlights
- 【Warranty and Satisfaction Guarantee】Our memory foam mattress comes with a 30-day replacement guarantee. However, you will only be eligible for a return after sleeping on it for two weeks, because you need time to get used to it. If you are still not satisfied after that, you can contact us to return it.
- 【The Best Softness and Support】Our king-size hybrid mattress combines the advantages of both worlds perfectly. It incorporates the traditional support of an innerspring mattress and the plush comfort of memory foam. The dual foam layers are meticulously designed to provide a perfect blend of softness and support.
- 【Ortable Installation and Delivery】We make it easy for you to receive and install your new mattress. This 12-inch memory foam king-size mattress is compressed, vacuum-sealed and then neatly rolled up in a box to ensure efficient delivery. It fits all kinds of bed frames, including those placed directly on the floor. It will fully expand within 48 to 72 hours, and then you can enjoy it to your heart's content.
- 【Independent Springs】Our mattress is equipped with state-of-the-art independent springs, offering outstanding orthopedic support. The individually wrapped coils ensure that the pressure on your head, shoulders, waist, hips and legs is evenly distributed. With our mattress, you will obtain customized support where you need it. The springs work independently, closely conforming to the contours of your body to achieve maximum comfort and a peaceful sleep.
- 【Enhanced Comfort and Support】Experience a truly luxurious sleeping surface with our premium king-size mattress. The high-end knitted fabric provides outstanding comfort and breathability, ensuring a comfortable and relaxing night's sleep. The independent pocket spring system is designed to relieve body pressure and offer balanced support. Each pocket spring works independently, minimizing any disturbances caused by the movements of your sleep partner or pets.
CA$349.99
5
Best Value

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Zinus

Zinus King Mattress - 12 Inch Green Tea Infused Memory Foam Mattress, Mattress in a Box, CertiPUR-US Certified Foam with Pressure Relief, 10-Year Warranty, King Size

Zinus

CA$400.00

More Details
Main highlights
- COMFORTABLE SUPPORT - Pressure-relieving memory foam conforms to the shape of your body while enhancing circulation and decreasing stress on your joints
- CERTIFIED SAFE MATERIALS – Crafted from high-quality CertiPUR-US certified foam and wrapped with an OEKO-TEX certified mattress cover all produced without the use of harmful chemicals for safer, healthier sleep
- ALL NIGHT FRESHNESS - The all-natural green tea and purified charcoal infusions work together to help keep your mattress fresh for many nights to come
CA$400.00

5 Best Mattresses King Sizes of 2025

BedStory King Mattress 12 Inch - Memory Foam Hybrid Innerspring Mattress King Size - Sleep Cooler & Pain Relief & Hypoallergenic Bed in a Box - Premium Gel Foam Matelas - CertiPUR-US Certified

12 Inch King Hybrid Mattress in a Box, Medium Firm Gel Memory Foam Innerspring King Size Mattress, Fiberglass-Free, CertiPUR-US Certified, Motion Isolation Mattresses for Pressure Relief

Zinus King Mattress - 10 Inch Green Tea Cooling Gel Memory Foam Mattress, Pressure Relief, for Cool Sleep, CertiPUR-US Certified Foam, Mattress in a Box, 10-Year Warranty, King Size

Kyshann King Mattress,12 inch Memory Foam Individual Pocket Spring Mattresses,Motion lsolation,EdgeSupport,Zoned Pressure Relief,Fiberglass Free,Medium Firm,King Size Mattress in A Box

Zinus King Mattress - 12 Inch Green Tea Infused Memory Foam Mattress, Mattress in a Box, CertiPUR-US Certified Foam with Pressure Relief, 10-Year Warranty, King Size

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