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5 Best Mattresses King Sizes of 2026

Last Updated - 2026/03/14

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 14 Inch King Size Mattress - Firm Hybrid Mattress in a Box, Hotel-Quality Memory Foam & Pocket Spring, Pressure Relief & Extra Back Lumbar Support, CertiPUR-US Certified, 365-Night Trial

BedStory

CA$659.99

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Main highlights
- TRUSTED QUALITY, RELIABLE SERVICE - Backed by over 40 years of mattress expertise, BedStory delivers lasting comfort you can trust. Sleep better knowing you’re investing in premium materials, proven support, and reliable service. Enjoy peace of mind with an at-home trial and a manufacturer’s lifetime warranty.
- RELIEVE PRESSURE, SLEEP DEEPER - This hybrid mattress combines premium high-density memory foam with individually wrapped pocket coils to deliver personalized, balanced support. It alleviates pressure points and helps the body relax while ensuring steady, all-around support.
- ERGONOMIC & ADAPTIVE SUPPORT - The expertly crafted mattress gently contours to your body, providing cloud-like cushioning for your shoulders and hips while reinforcing support around the lower back. Perfectly blending comfort and support, it helps maintain healthy spinal alignment regardless of sleep position or body type.
- ENHANCED DURABILITY & MOTION ISOLATION - Each coil is individually wrapped and works independently, the mattress reduces noise and motion transfer. That means fewer disturbances when your partner turns or gets up in the night, allowing both of you to enjoy a calmer, more restful sleep.
- CERTIFIED SAFE, EASY TO SET UP - BedStory mattress is both CertiPUR-US and OEKO-TEX Standard 100 certified, ensuring the absence of toxic materials and fiberglass in its composition. It arrives in a box, making setup simple. Please note that it may take 72 hours for the mattress to fully expand to its original height in colder weather.
CA$659.99
2

✖
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.

Dreemzee

Dreemzee King Size 14 Inch Hybrid Mattress Pocket Spring, Cooling Gel Memory Foam Matelas in a Box, Fiberglass-Free, CertiPUR-US & Oeko-Tex Dual Certified, Motion Isolation, 365-Night Trial

Dreemzee

CA$499.99

More Details
Main highlights
- 【Small box packaging for easier transportation and handling】 Using new roll-pack compression technology, it can easily fit into elevators and narrow stairwells. After unpacking, just wait 48-72 hours before use. 10-Year Warranty & 365-Night Trial
- 【Physical fire protection】 This mattress is physically fireproofed with Fiberglass-Free fireproof cotton felt, having passed strict laboratory testing and meeting fire protection requirements. Compliance Statement: This product complies with the relevant regulatory requirements of Canada regarding SOR/2016-183 and the Textile Labelling and Advertising Regulations (C.R.C., c. 1551).
- 【Noise reduction + motion isolation】 Each spring is individually wrapped to make the mattress quieter and isolate motion, offering partners a quieter and more comfortable sleep experience.
- 【Breathable & Comfortable Sleep】 Made with soft, lightweight knitted fabric that promotes airflow and helps wick away moisture. The breathable material allows heat to escape naturally, keeping you comfortable without overheating for a better night's rest. The Dreemzee hybrid mattresses is CertiPUR-US certified and Oeko-Tex Standard 100 certified, ensuring that its materials are safe and non-toxic.
- 【Adequate support is fundamental】 This mattress is made of high-quality high-carbon steel material, passing 100,000+ pressure tests without collapsing. Medium firmness provides strong support while better conforming to body curves, releasing physical pressure.
CA$499.99
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 - 12 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$420.00

More Details
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$420.00
4

✖
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.

KUDSQ

King Size Mattress, 12 Inch King Mattress in a Box, Hybrid Memory Foam Mattress King Size with Pocket Spring for Pressure Relief & Quiet Sleep, Medium Firm, Fiberglass Free/CertiPUR-US

KUDSQ

CA$399.99

More Details
Main highlights
- 【Worry-Free Purchase】This king bed mattress is compatible with most bed frames, including box spring, floor, slatted base, flat platform and bunk bed. The mattress in a box is easy to transport to your room. Please allow 24 - 72 hours for your mattress to queeny expand after opening the mattress. If you have any issues or concerns, our customer support team is always here to assist you.
- 【Support & Quiet】The wrapped pocket springs in this hybrid mattress can work independently and limit motion transfer between you and your partner. So the memory foam mattress king can give you a quiet sleep and you don't need to worry about disturbing each other. The thicker coils at the edge provide strong edge support, no worry about sagging.
- 【Safe & Health】All foam in this king size memory foam mattress is CertiPUR-US certified and tested to be free of harmful substances,no fiberglass, so it is a safer and healthier option for your family to choose our mattresses.
- 【Comfortable Sleep】KUDSQ 12 inch king size mattress combines thousands of individual pocket spring coils and multiple memory foam layers, ensuring your weight is evenly distributed from head to toe, provides you body with targeted support and queeny relax your muscles, so you can experience the ultimate comfortable sleep, wake up feeling refreshed and free of aches and pains.
- 【Breathable & Skin-friendly】Our mattress king size adopted skin-friendly knitted fabric for better airflow and breathability, the wave foam design and independent pocket spring system can enhanced air circulation prevents trapped heat, help you get rid of a night in sweaty tossing and turning, wicking away sweat and maintaining warmth for a restful night.
CA$399.99
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 - 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

More Details
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

5 Best Mattresses King Sizes of 2026

BedStory 14 Inch King Size Mattress - Firm Hybrid Mattress in a Box, Hotel-Quality Memory Foam & Pocket Spring, Pressure Relief & Extra Back Lumbar Support, CertiPUR-US Certified, 365-Night Trial

Dreemzee King Size 14 Inch Hybrid Mattress Pocket Spring, Cooling Gel Memory Foam Matelas in a Box, Fiberglass-Free, CertiPUR-US & Oeko-Tex Dual Certified, Motion Isolation, 365-Night Trial

Zinus King Mattress - 12 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

King Size Mattress, 12 Inch King Mattress in a Box, Hybrid Memory Foam Mattress King Size with Pocket Spring for Pressure Relief & Quiet Sleep, Medium Firm, Fiberglass Free/CertiPUR-US

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

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BedStory King Mattress, 12 Inch King Size Hybrid Mattress with Individual Pocket Springs, Luxury Mattresses in a Box for Lumbar Support ＆ Pressure Relief, CertiPUR-US Certified, 365-Night Trial

Zinus King Mattress - 14 Inch Green Tea Cooling Gel Memory Foam Hybrid Mattress, Pocket Coil Springs for Motion Isolation, CertiPUR-US Certified Foam, Mattress in a Box, 10-Year Warranty, King Size

Dreemzee King Size Hybrid Mattress 12 Inch, Cooling Gel Memory Foam Matelas in a Box, Pocket Spring for Motion Isolation, Fiberglass-Free, CertiPUR-US & Oeko-Tex, 365-Night Trial, 10-Year Warranty

Zinus King Mattress - 12 Inch Green Tea Cooling Gel Memory Foam Hybrid Mattress, Pocket Coil Springs for Motion Isolation, CertiPUR-US Certified Foam, Mattress in a Box, 10-Year Warranty, King Size

Naiveer Cool Gel Memory Foam Hybrid Mattress, 10 Inch King Size Mattress in A Box with Pocket Springs for Cool Sleep & Pressure Relief, Medium Firm Feeling with CertiPUR-US Certified Foam

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Zinus King Mattress - 6 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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