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LIFEMENT

LIFEMENT King Mattress, 8 Inch King Size Mattress, Basic Graphite Cooling Memory Foam Mattress in a Box, Pressure Relief with Medium Firm Support, CertiPUR-US Certified, 80''L x 76''W

  • Based on 175 reviews
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Availability: In Stock.
Fulfilled by Lifement
Arrives Monday, May 18
Order within 14 hours and 1 minute
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Size: King (U.S. Standard)


Set name: Cooling 8"


Features

  • ADVANCED COOLING COMFORT : This king mattress uses graphite memory foam to help disperse body heat and reduce moisture. A premium king size memory foam mattress designed for cooler, more restful sleep.
  • FIBERGLASS-FREE SAFETY BUILD : This king mattress is made without fiberglass for a cleaner home environment. The soft cover on this mattress king size model provides added comfort and peace of mind.
  • 3-LAYER ADAPTIVE SUPPORT SYSTEM : High-density base foam in this king size mattress provides lasting stability. A transition layer absorbs motion and minimizes disturbance. The top layer of open-cell graphite memory foam enhances airflow and breathability while contouring to your body for pressure relief in any sleep position : back, side, or stomach.
  • CERTIFIED MATERIALS YOU CAN TRUST : This king mattress includes CertiPUR-US certified foams and OEKO-TEX certified fabric. Each mattress king size model is tested for quality and durability.
  • KING MATTRESS IN A BOX : This king mattress ships compressed for convenient delivery and setup. Simply unbox your king size memory foam mattress and allow time to expand.

Brand: LIFEMENT


Size: King (U.S. Standard)


Product Dimensions: 80"L x 76"W x 8"Th


Item Weight: 59.7 Pounds


Item Firmness Description: Medium Firm


Top Style: Plush Top


Cover Material: Cotton


Number of Layers: 3.0


Fill Material: Cotton, High Density Foam, Memory Foam


Special Feature: Breathable, Low Motion Transfer, Pressure Relief, Removable Cover, Temperature Regulating


Item Firmness Description: Medium Firm


Number of Layers: 3.0


Additional Features: Breathable, Low Motion Transfer, Pressure Relief, Removable Cover, Temperature Regulating


Construction Type: Memory Foam


Is Customizable?: No


Size: King (U.S. Standard)


Item Dimensions L x W x Thickness: 80"L x 76"W x 8"Th


Item Weight: 59.7 Pounds


Item Thickness: 8 Inches


Item Dimensions: 80 x 76 x 8 inches


Item Depth: 8 inches


Cover Material: Cotton


Fill Material: Cotton, High Density Foam, Memory Foam


Product Care Instructions: Hand Wash Only


Mattress Comfort Layer Material: Comfort Foam, Memory foam


Material Type: Cotton Blend, Foam, Memory Foam


Brand Name: LIFEMENT


Model Name: LIFEMENT Memory Foam Mattress


Product Benefits: Back Pain Relief, Improves Sleep, Posture Support, Reduces Toss & Turn, Stress Relief


Model Number: B-MT-MEM-08-K


UPC: 810164541703


Mattress Type: Standard Mattress


Manufacturer: Beyond LIfestyle, Inc.


Set Name: Cooling 8"


Manufacturer Part Number: B-MT-MEM-08-K


Unit Count: 1.0 Count


Included Components: Cotton Outer Cover, Flame Retardant Innver Cover


top-style: Plush Top


Color: Grey


Style Name: 8 Inch Memoryfoam


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 18

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Affordable and comfortable mattress with an ease to unpack
Size: King (U.S. Standard) Set name: Cooling 12"
Review Image by Neha
Review Image by Neha
Review Image by Neha
The LIFEMENT King mattress is easy to unpack and ready to use, offering a simple and safe setup experience. It features memory gel foam, which provides the support I need for a good night sleep. The mattress is soft with just the right amount of sink, making it very comfortable after a long day. I found Lifement to be a great, affordable option without compromising on quality. The king size mattress fits perfectly on my master bed and complements both the bed frame and the overall aesthetics of my bedroom. One of my family members is looking to furnish their apartment, and I found the perfect suggestion. The mattress is built from advanced quality and available in different sizes and colors. ... show more
Reviewed in the United States on March 28, 2026 by Neha
    • Very nice!
Size: King (U.S. Standard) Set name: Cooling 12"
This mattress is really comfy and has a nice mix of soft and firm. The memory foam feels cozy, and the springs give good support without making it too stiff. It doesn't get too hot at night, which I like. Super easy to set up right out of the box. It's a solid mattress and worth it for the price.
Reviewed in the United States on March 15, 2026 by SY
    • Dreamy memory mattress
Size: Queen (U.S. Standard) Set name: Matcha Cooling 6"
Review Image by Emily Phelps
The media could not be loaded. This is a wonderful memory foam mattress . The best affordable mattress Lifement works well for us! It’s sturdy and strong yet still soft and cloud like. It shaped up nicely after leaving it untouched for a few days to properly ventilate and form into its proper shape. It’s a true queen size and fits the bed frame/ sheets/ and blankets perfectly. My boys said it was extra cozy after using a traditional spring mattress the last couple years. I love the green tea infusion. And the cooling effects are always appreciated. Quality mattress. ... show more
Reviewed in the United States on March 2, 2026 by Emily Phelps
    • Great comfort
Size: King (U.S. Standard) Set name: Gel 12"
Review Image by M waqar
Review Image by M waqar
Review Image by M waqar
This king size mattress is honestly really perfect if you like a firm feel. It’s supportive without feeling like you’re sleeping on the floor, and the thickness is great. I was surprised it’s actually a true 12 inch like advertised, fits the bed frame perfectly and looks full and plush. The edges feel strong too, so you don’t feel like you’re sliding off when you sit on the side. It barely transfers movement which is nice, and it didn’t have that strong weird smell when opening. Overall it feels high quality and totally worth it, defintely a great buy. ... show more
Reviewed in the United States on March 3, 2026 by M waqar
    • Feels premium for the price. (Bed + Frame Combo -King)
Size: King (U.S. Standard) Set name: Cooling 12"
Review Image by Sathya Tiagaraj
Review Image by Sathya Tiagaraj
Review Image by Sathya Tiagaraj
Review Image by Sathya Tiagaraj
Review Image by Sathya Tiagaraj
Review Image by Sathya Tiagaraj
Review Image by Sathya Tiagaraj
I’ve been using the Lifement 12” Graphite memory foam mattress King with a Lifement Wooden Bed Frame (Cherry with Headboard) for a week now, and overall I’m happy with both. Pros: Easy to Setup Came well packaged in a box that has all the tools required for assembly Bed is lightweight and moderately firm. The weight is lower on average compared to a standard 12” king mattress. Wooden Slats have both Velcro and Screws instead of just Velcro. Cons: I was hoping the mattress will be firm, but it feels a bit softer than advertised. I would rate the firmness around 6.5/10. Edge support on the edges is lesser compared to the middle. The bed is supportive and comfortable, even when I am sleeping on back. The motion transfer is minimal, and I am don’t feel any movement when my partner gets in or out of the bed. The mattress took about ~60 hours to fully expand, and it has held well so far. The main downside is edge support. Sitting or sleeping near the edges feels less stable than the center, though it’s not a dealbreaker. The wooden bed frame was easy to assemble. The Velcro-secured slats hold firmly in place with the screws. The finish and the look of the frame is exactly as described. Everything needed for assembly was included. It feels sturdy, does not creak, and supports the mattress well without the need for a box spring. Overall, I would recommend this mattress and frame combo to someone looking to buy a bed + frame combo. It’s easy to set up, and worth the price we are paying. I am looking forward to using it and I am hoping it will hold up well. ... show more
Reviewed in the United States on December 18, 2025 by Sathya Tiagaraj
    • Great Mattress and Super Comfortable!
Size: Queen (U.S. Standard) Set name: Cooling 12"
I’m so happy I chose the LIFEMENT Basic Queen Graphite Infused Memory Foam Mattress. From the very first night, I could feel the difference. It has the perfect medium-firm balance, supportive but still comfortably soft. The cooling graphite-infused foam really works too. I tend to get warm at night, but this mattress keeps me comfortably cool and helps me sleep through the night without waking up. Another huge plus: it’s fiberglass-free, which gave me peace of mind. And even though it came in a box, it fully expanded quickly and was ready to use in no time. I’ve been waking up with less stiffness and better rest, so the pressure-relief foam definitely does its job. Overall, this mattress exceeded my expectations. Highly recommend it to anyone looking for a great night’s sleep! ... show more
Reviewed in the United States on December 11, 2025 by Ellie J.
    • Very Comfortable Mattress for its price.
Size: Queen (U.S. Standard) Set name: Gel 12"
Review Image by Amazon Customer
Review Image by Amazon Customer
The mattress came right on time! big heavy box. I definitely needed a cart or a hand truck to bring it into the room. Love that it comes with 2 covers already so I don't have to worry. Fits perfectly with the bedframe without me worrying about bumping into it. I wish the mattress was firmer, especially around the edges of the mattress as it feels like I am sinking into it. I understand that is the nature of the memory foam material. The middle part of the mattress is very firm and comfortable. I love that cooling gel feature because when summer hits, I won't be sweating as much on this mattress. The setup was very easy, but definitely needed a helper to lay it on the bedframe. If LIFEMENT ever makes a firmer mattress, I would gladly try it out. ... show more
Reviewed in the United States on November 12, 2025 by Amazon Customer

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